Generally speaking when it comes to tipping:
Counter Service - No tip (Why should someone get a tip just for standing behind a register and taking my order? This includes, but is not limited to: Rubios, Starbucks, It's a Grind, Cold Stone, ma and pa style places that are not full service restaurants)
Take out: No tip, unless it is being delivered to my car or house, then a tip may be justified depending on the quality of service.
Buffets - 10%-15% (no tip if I have to get my own drinks, no service there, clearing the tables is the bus boy's job and they never get the tips in other restaurants). (If it is a Disney buffet AND the server has been doing "extra" things for us, like taking pictures and such, I will tip better, as long s my drink is kept refilled)
Full Table Service:
Really Bad Service - $0.01 (I always leave some sort of tip so that the server doesn't think that I forgot the tip).
Bad Service - 5%
Acceptable - 10%
Good Service - 15%
Excellent Service - 20%
Also if something is wrong that is not the server's fault, but they give a discount to correct it, we will leave an additional tip, usually the full amount of whatever the discount the server gave us was, but if it's a problem with the server, then we do not do so.
Here's one example:
We went to Baker's Square one night, the night before they had been totally dead, so that night they had to ask some people not to come in to make up for the money lost, well that night was extremely busy for some reason, the server explained this to us up front, but we were in no real hurry and knew what was going on when we came in and sat down (it was an extremely hot day and their air conditioning worked really well, so no problem to us). We just asked our server to bring drinks two at a time for each of us to save her some time, they even had the bus boy refilling drinks. Well, at the end of our meal she gave us our two slices of pie for free, we gladly added the cost of the pie to her tip, so her tip was about 50% of the bill, she was delighted and I am sure we would have had great service the next time we went, but we just drove by there the other day and they are closed
Now mind you, here in California server's must make at least minimum wage, but to me it doesn't matter, those that do not should go on strike until they get that concession made to them, it's not my fault that they don't earn what they should, why should I feel obligated to make up for their lack of pay when they spend no more than 5 minutes talking with us to get our order and in many cases bring one drink and our food and nothing else? Now, if you keep my drink refilled, are friendly and check up on us a couple of times you are much more likely to get closer to the 20% range.
As far as WDW servers go, they will get tipped according to how good their service is, I usually find that the buffets are the ones that are the worst at keeping my drink refilled.
All of the following factors are part of the service and affect the tip, in my opinion:
- How quickly did the server take our drink orders.
- How quickly did our server return with our drink orders?
- How well did the server do at making recommendations if we asked?
- How friendly was the server?
- Did the server make sure we were finished with our previous course prior to bringing the next course out?
- Did the server make sure that our plates were cleared before the next course came out?
- Did the server make sure that our orders were correct prior to bringing them out?
- Was it the server that brought our food and drinks out or did they have an assistant?
- Did the server check on us with each course to make sure that we had everything we needed and see how we were doing?
- Did the server refill the drinks before they were less than 1/4 full?
- How quickly did the server bring our bill after we told him/her we were done?
- How qucikly did the server bring back the bill if paying by card or the change if paying by cash?
- Was the change correct if paying by cash?
Drink order should be taken no more than 5 minutes after being seated and unless they are mixed drinks, the drinks should come back within about 3 minutes, if they are mixed (non-alcoholic) drinks, then the first ones within about 5 minutes.
The server should be friendly and knowledgeable about the menu, I understand using an assistant at busy times, but if I have 10 different people bringing me something it makes it very hard to determine who gets what portion of the tip. Drinks should be kept filled at all times (of course if I drink it within 30 seconds, the server could not possibly keep up, I understand that and if I know that I am really thirsty I will often ask them to bring me two drinks at once and/or order a cup of water as well), really all of the above items should be addressed properly.