I want to do Hot Roast beef and then sub sandwiches for a baptism. There will be 34 adults and 8 kids. Should I do 7 lbs of the beef and then 45 pieces of subs? The sub place cuts them in thirds to equal 45 pieces. How many rolls should I get for 7 lbs of beef? Will this be enough? Or do you think it would be easier just having all sub with variety? also we are doing 4 salads, fruit and then cake. Thanks for your help!

Have the sub place cut quarters, especially if you are getting more than 1 kind of sub, this lets people take 2 pieces if hungry and also works better for kids. Get 10 if you also do the hot beef, get 16 if you just do subs in 1/4, 18-20 if you do them in thirds.