My big birthday , catering for 15 for a weekend. Curry for first night is a good idea. I did make your own pizza, bought bases, lots of toppings, pair off, make your own pizza, cook it ,eat it.
Breakfasts, cereal, juice, eggs, bread, bacon , mushrooms , tomatoes all available, cook your own.
Saturday lunch I told people they were on their own, go out, have fun.
Saturday I paid someone to come in and cook , serve and clear away a three course dinner .
Sunday booked tables at local pub, everyone paid for themselves.
I also made sure there were snacks, fruit, soft drinks, wine and beer available.