I used some gold baked pumpkin, and a bunch of gold onion rings and some gold pumpkin soup. They were cool with all of that but they actually really liked the silver pumpkin soup the best lol. So I would suggest using like a ton of silver pumpkin soup. Keep in mind that for these "best event" achievements don't require you to sell drinks AND food, meaning if you have enough of one thing then you don't even need the other. If you have enough food, you don't even need to stock any beers or wine. (Unless you're doing the Ms. Charm event, then I would suggest using only gold red wine, which is pretty easy to get mid-late game)
https://docs.google.com/spreadsheets/d/1NNhQqzhQXC7woL7QXUme...^ This link is something I found useful when going for these achievements.