美心 is better than other 2 but it's not 到會. You need to pick up the food yourself. You can get the menu from http://www.maxims.com.hk/html/fastfood/
Base on the order form online, you can consider below choices which I ordered for a recent party:
Salad: #01 and # 03
Snack/Bread: #04
Hot Appetizer: #13
Rice/Spaghetti : #16
#04 & #13 are both chicken but the latter one is especially good for kids (easy to be grasped and with one major bone only). Don't pick #06 (too dry) and #15 (small octopus is hard to chew)