✔ 最佳答案
If you organize the bingo game for the senior citizens indoor, you will have two problems.
First of all, you may takes time in explaining the games to them. Senior citizens may takes more time to familiar with the game rules.
Secondly, if the game is played inside the resturant, they will stayed in the McDonald even longer. Even worse, more people will gathering inside the resturant. It will opposite to your original idea.