Hello,
I am a children's entertainer and have been in the business for 22 years.
My advice to you...
Reserve your spot at the park. Call your local parks and recreation and they will charge you a fee of $12. Normally. Depending on how large the space. Some spaces have elecricity. you may choose to bring a boom box for kids music...
Make a mini schedule of your event....
Playtime, eating time, fun game time, cake and presents last.
Moonbounces are not only fun for kids, but a way to gather the kids in one spot.
Make sure you have plenty of supervision on the playground. Parents tend to chit chat and not watch their kids... remember this is your party. Ask a friend or neighbor kid to help you watch the playground..
Bring a First Aid Kit... include frozen pouch juices for ice packs
Moonbounces need to be approved by the park. They will often ask you for a million dollar insurance policy. We own several pieces of various inflatables and have a large policy just for this reason. Ask the Moonbounce company to submit paperwork to the park... get their fax number when reserving and the moonbounce company should take care of the rest... if they don't, then get another moonbounce company!!!
Other ideas? games, 3-legged race, water balloon toss, Bring a soccer ball to kick around.. face painting or bring a craft...
Have the kids play for a little while then do something else to gather them back at your picinic spot. Your child will feel more special if the kids are sitting with her. Otherwise, you will have chaos and kids will want to play on the equipment rather than eat.
Have fun and get all the parents involved. Parks have lots of hazards and they can be lots of fun and inexpensive too. The more help you have, the more time you have to enjoy your party at the park.