Is training a solution to this problem?

Question $29$ options:

Yes, because the staff are only trained at orientation when they are new hires and so they will probably need a refresher at least once per year.

Yes, because the staff have been trained to ID people who look younger than $25,$ but that was before customers were required to wear masks, so new procedures are necessary.

Yes, because now they should be taught how to ask customers to remove their masks while they are checking out so that they can evaluate their features.

Yes, because the staff has already been trained extensively to identify minors, so they are choosing to ignore the policy and need to be re$-$trained on the importance and the consequences of not refusing service to minors.