OK we have been doing this every year, this year will be 30 kids between 6 and 4. Last year we did a Little Mermaid meets Nemo. Fancy dress is v popular at this age, lots of prett princesses. When they got there we had a big birthday banner to colour in. A roll of paper with Happy birthday written on it in big letters, plus lots of fish and mermaids to colour in.
There were also lots of baloons to play with and burst. This worked for about 20 mins as everyone arrived. We then had lots of games, my dh was in charge. Pass the parcel, we are having two circles this time with 30 kids. Musical statues - however what we do is tell them what they have to be (ie when the music stops be the best cat, be the best lion) so they don't have to be still. Musical hats!! I found loads of silly hats, put them in a pile and instead of bumps/chairs they grab a hat. Very funny and less violent (got that idea form a fellow mner). Grandmother's footsteps (needs older kids who know the game, te littlies didn't) Find the pairs - I blue tacked various pairs of fish/mermaids all over the hall, and the kids had to find a pair to win a prize (one sweet) I had about 50 pairs, so at least 2 pairs per child. I also asked older kids o help the babies, but we had lots of adults. Games took up about 40 mins.
Tea was on a massive long trestle table, with each child having a party box of food, I love these boxes and it means less food gets wasted and people love taking home their box. Lastly we had a bit of a disco, Pop Party cd is the popular one. Thsi took up about 2 hrs.
The key for this is LOTS of adult help, get grannies to be responsible for food and tea fo other grown ups, get grown men to do the games, they love playing daft things. Also 1 1/2 hrs is long enough at this age if you can. Don't be shy asking the parents who do dcide to stay to help. I find the village hall situation is easier, as people are happy to muck in better than at home I had one dad cleaning the floor from our bubble machine! one mum serving tea and wine, they were happy to get stuff out. I directed on teh day
Our next party is on Sunday with about 30 kids. My dd's have chosen posh plastic champagne flutes and gold plates!! very princess