the ultimate first birthday party checklist (8 weeks to party day)

Planning your baby’s first birthday is an exciting milestone, but it can also feel overwhelming. Between choosing a theme, creating a guest list, ordering decorations, and making sure your little one is happy on the big day, there are a lot of moving pieces.

The good news? It doesn’t have to be stressful.

This week-by-week guide will help you stay organized from two months before the party all the way through celebration day. Whether you’re planning an intimate gathering at home or a larger even with family and friends, you’ll know exactly what to do—and when to do it.

If you’re celebrating in Philadelphia, South Jersey, or the surrounding areas, you’ll also find helpful local planning tips throughout this guide.

in this guide

• 8 Weeks Before

• 6 Weeks Before

• 4 Weeks Before

• 2 Weeks Before

• 1 Week Before

• The Day Before

• Party Day

• First Birthday Budget Tips

• Frequently Asked Questions

• Free Printable Checklist

8 weeks before the party

This is when the biggest decisions should be made.

Your checklist:

☐ Choose your party date.

☐ Decide on your budget.

☐ Create your guest list.

☐ Choose your venue (home, backyard, community center, or event space).

☐ Pick a party theme.

☐ Research entertainment and rentals.

☐ Book your photographer if you’re hiring one.

Cousins Corner Tip

Popular weekends—especially during spring and fall—can book quickly. If you’re planning to include toddler entertainment like soft play, reserve it as early as possible to secure your preferred date.

6 weeks before the party

Now it’s time to start bringing your vision to life.

Your checklist:

☐ Order invitations.

☐ Purchase decorations.

☐ Order your smash cake.

☐ Reserve tables and chairs if needed.

☐ Plan your menu.

☐ Choose your party favors.

☐ Begin shopping for your baby’s birthday outfit.

Choosing the Right Entertainment

One-year-olds don’t need elaborate activities—but they do need a safe place to explore.

Soft play creates an age-appropriate space where babies and toddlers can crawl, climb, slide, and play while parents relax and enjoy the celebration.

It’s also one of the most popular additions to first birthday parties because it doubles as entertainment and beautiful event decor.

4 weeks before

Your’e halfway there!

Your checklist:

☐ Send invitations.

☐ Order balloons.

☐ Finalize your menu.

☐ Purchase serving supplies.

☐ Order your birthday banner or personalized decorations.

☐ Decide where gifts will be placed.

☐ Plan your music playlist.

Popular First Birthday Themes

Need inspiration?

Some timeless favorites include:

• One Silly Goose

• Berry First Birthday

• Wild One

• Little Pumpkin

• Some Bunny Is One

• Twinkle Twinkle Little Star

• Teddy Bear Picnic

• Daisy First Birthday

• Safari Adventure

• Neutral Boho

Choose a theme that matches your family’s personality rather than following every trend.

2 weeks before

The countdown is officially on.

Your checklist:

☐ Confirm RSVPs.

☐ Finalize seating.

☐ Purchase drinks.

☐ Assemble party favors.

☐ Confirm your cake pickup.

☐ Double-check all rental reservations.

☐ Make a weather backup plan if celebrating outdoors.

Planning Outdoors?

Even with beautiful weather in the forecast, always have a backup location or tent plan.

Weather can change quickly, and having a contingency plan reduces stress.

1 week before

This week is all about organization.

Your checklist:

☐ Clean and prepare your party space.

☐ Charge cameras and phones.

☐ Pick up decorations.

☐ Purchase fresh food.

☐ Confirm arrival times with vendors.

☐ Steam your baby’s outfit.

☐ Create a setup timeline.

Things Parents Often Forget

Even the most organized parents overlook small details.

Don’t forget:

• Extra diapers

• Wipes

• Baby snacks

• High chair decorations

• Cake cutting knife

• Lighter for candles

• Phone charger

• Extension cords

• Trash bags

• Ice

• First aid kit

• Paper towels

the day before

Today should be about finishing touches—not rushing around.

Your checklist:

☐ Decorate as much as possible.

☐ Pick up the cake.

☐ Prepare food.

☐ Set out serving dishes.

☐ Charge speakers.

☐ Lay out your baby’s outfit.

☐ Get a good night’s sleep.

Remember: your baby won’t remember every decoration, but they’ll absolutely benefit from happy, relaxed parents.

party day

Take a deep breath.

Enjoy the little moments.

Take lots of photos.

Let your guests help.

Most importantly…

Celebrate your growing family.

The first birthday is just as much about celebrating your first year as parents as it is celebrating your little one.

first birthday budget tips

You don’t have to spend thousands of dollars to host a beautiful celebration.

Ways to save money:

• Host the party at home.

• Keep the guest list intimate.

• Choose one statement balloon display instead of decorating every wall.

• Rent entertainment instead of buying toys you’ll only use once.

• DIY simple desserts alongside the birthday cake.

• Borrow serving trays from friends or family.

Focus your budget on the things your guests will actually remember:

• Great food

• Happy kids

• Beautiful photos

• Fun entertainment

frequently asked questions

When should I start planning a first birthday?

Eight weeks is usually the perfect amount of time for most celebrations.

How long should a first birthday party last?

Two to three hours is ideal for young children.

Is soft play appropriate for a first birthday?

Absolutely! Soft play is specifically designed for babies and toddlers, giving them a safe place to crawl, climb, slide, and explore.

Should I have the party before or after nap time?

Whenever possible, plan around your child’s normal nap schedule. A well-rested birthday child usually means a happier celebration.

How many guests should I invite?

There’s no right answer. Some families prefer a small gathering of close relatives, while other invite extended family and friends. Choose what feels comfortable for your family and your space.

planning a first birthday in philadelphia or south jersey?

If you’re looking for a modern, clean, and beautifully styled play area for your celebration, Cousins Corner specialized in soft play rentals designed especially for babies and toddlers.

Our soft play packages create a safe space for little guests to play while adding a beautiful focal point to your event. We proudly serve families throughout Philadelphia, South Jersey, and surrounding communities.

Whether you’re planning an intimate birthday at home or a larger celebration at a venue, we’re here to help make your little one’s big day memorable.

save this checklist

Planning gets much easier when you break it into small steps. Bookmark this guide, share it with another parent, or come back to it as your party approaches.

Happy planning—and happy first birthday to your little one!