K.R.
I had the same problem until my sister told me about Crayola Cafe at Crown Center. You pretty much pay for what you want. It's 10 dallors per child and they provide the cake (which is optional), balloons, decorations, food, and even an activity for the children to do. All you have to do is show up and they handle the rest. You could also have it at Cool Crest. Their's is 10 dallors per child also and they do the decorations plus the kids could play arcade games, older kids could play on the golf coarse or the go carts that way everyone can enjoy theirselves. Try those and let me know how it goes.