Well, hotels I can understand. Restaurants not so much.
Hotels are very rarely, if ever, full. That you can attribute supply and demand too, and locals usually don't stay at hotels. It requires longer shifts (or just more people) in housekeeping, and everyone else.
Restaurants, however... I don't feel they should be gouging, as some can't be busier than they usually already are
I think I usually tip well, but, I usually don't tip 20%
Does anyone?? I very rarely have food so good I wish to depart with more money.