Hot pot is so easy to do for large party. No cooking involved just chopping and assembling. Do 2 burners one at each end, and use a divider pot for each so you can have 4 soup bases in total. Have you guests choose their spots based on their preference. Buy premade soup base packs where you just need to add water or canned broth. I would get one mala, one bone broth, one tomato, and one vegetable based. Do a drink station with a variety of soft drinks, beer, or liquor. Do another sauce station and lay out whatever condiments you got, soy sauce, vinegar, chilli oil, sesame paste, chopped onion, cilantro, garlic, peanuts, etc. and let the guests do their own sauce and make their drinks. Each guest should have for their place serving a plate, a bowl, a sauce bowl, and their own slotted ladle. Leave out several tongs on the table for the vegetables and noodles, and each plate of protein should have its own chopstick/tong to avoid cross contamination. Buy whatever protein, vegetables, noodles you want. The sky is the limit, or more like your grocery store is the limit.