Well, some people feel that you shouldn't tip the housekeepers.
We do tip unless the room isn't made up well or clean.
For us it's $1-2 per person ($5 for three people) per day, left daily, and another $2 each evening for turn down service.
Bell hops get $1 per bag, valets get $2 each time they get the car for us.
Bartenders get $1 per round, whether it's one drink or two. (If it's more than three people it goes up from there.
At buffets we tip 15%, full service restaurants we tip 20%, unless service is really good or bad, then we adjust accordingly.
Concierge we don't tip in cash, but do give a small gift such as a box of Godiva chocolates to share for a good job.
Am I forgetting anyone??
Anne