A.C.
I had 40 adults and 6 children ages 1-10 for my eldest's first birthday. We made a big jambalaya, served with white beans, french bread, a veggie tray and dip I made that served everyone (and we ALL ate a lot), plus 2 gallon ziplocs of leftover jambalaya for about $100. We ordered a cake at Walmart, and they provided the free smash cake. Jambalaya is a great way to feed a lot of people on a budget (just need to buy the meat when it's on sale and freeze it until you need it).
My bff and mom brought waters, tea, and sodas.
My oldest's first birthday meal was blackened alligator tail, jambalaya, white beans, a little bread, and grape tomatoes with dip. His cake was chocolate. :) My youngest son: we were in the middle of moving, and were out of state away from everyone, so we didn't have a proper party for him.....The 4 of us went to an indoor playground / bouncehouse place, and I served him his favorite: torn up fried chicken, steamed broccoli, mac 'n cheese. His cake was red velvet.