implementing a service charge and then keeping it for the owner or management.
I usually tip a little over and above that amount, because the wait staff are the ones who should get it.
Hotel are at least predictable; they all charge 17% over and above what the menu says. But with other establishments it's hit-or-miss whether they will automatically add the service charge or not.

"If you're looking for sympathy, you'll find it between sh*t and syphilis in the dictionary."
- David Sedaris