I think you go by what minhag Hama-kom is, if you can. In the united states, 15-20%! Tip is typically given/expected for the first three services that you mentioned.
Coat room and valet parking usually are given $1-2, airport baggage handler, at least $1 per bag. Delivery man is very subjective. I omitted counselor because I find the camps usually tell you a suggested amount.
All amounts can be adjusted depending upon the quality of the service provided.
I think giving nothing when the service is acceptable is perceived as rude, because of the expectations that are built into society.