D.P.
If you are trying to be careful with money why not keep it small? How about a sleepover with a couple friends? Maybe movie and a lunch with them? The fire station does sound fun and I know they do it here in MN but I think it is limited to number of kids. We've had a couple big parties and been to many and I think they are overrated. We started to downsize and I think the kids like spending quality time with their best pals. Besides my son doesn't need 20-30 more toys! Remember you also have to add in cost of cake and lunch (if you do it at that time) and goody bags if you choose.