It does not matter how much money you have, there are still those that do not tip well, whether it is the feeling that a tip is not deserved, or just plain not realizing they are under-tipping. If you have worked in the service industry or know the friends you have that whenever there is a split bill and money is thrown into the middle, there is always that one person that does not leave enough for tip. There can be a fine line between tipping too much and seeming to flaunt having money, or not tipping enough and giving off the impression of being ungrateful, so there is some tipping etiquette to follow. Also, just because there is a tip jar out on the counter does not mean one is necessary.
Servers and Bartenders
While it may be common sense, you should be tipping servers and bartenders 20% of the total bill including tax. If there truly was poor service then discretion can be made, but if not then play it safe with 20% for good service, even tipping above for excellent. Bartenders should be tipped the same, but tipping a dollar or two for each drink is perfectly acceptable, if it is a craft cocktail made instead of cracking a beer open. If sitting down at a buffet, it is acceptable to tip 10%, depending on the amount of trips you made and needing a fresh plate. For restaurant takeout, you are in fact going and picking up, so there is no obligation, but if you have a large order, took time to pack, then a few dollars is a nice gesture, especially if the complete order is correct.
If the bellhop is handling your bags it is acceptable for a dollar per bag, unless it is personally delivered to your room were you could give a few as a token of appreciation. The cleaning crew works hard to ensure that your mess is cleaned up on vacation and back to a brand new room night after night, so why not leave a few dollars a day on the nightstand as a “thank you”. The concierge is there to answer questions for free, so unless they are getting you hard to find tickets or restaurant reservation at which you could give $5-20, it is not generally obligated.
Others Not to Forget at 20%
Taxi drivers can be tipped 15-20% of the fare, additionally if handling bags. When visiting the hair salon or manicurist, a 15-20% standard should be applied as well.