Tattoo artists will understand if you need to take a break from pain, to get something to eat or to use the bathroom. When you are looking to take a smoke break or drop a selfie it becomes an annoyance and distraction. They have to dispose of and use a new set of gloves every time and re-set up their stations.
Close, but not as bad as the break is the time question. If you have a 5 hour appointment, expect to be there for 5 hours. If you have booked the day for a session then it's how long you can stand. Asking how much longer is going to make the artist want to hurry and a rushed tattoo is a bad tattoo.
“Why do I need to leave a deposit?”
If you have to ask this question, you are the reason that everyone has to leave a deposit. Tattoo artists are not paid when they are not tattooing or drawing a tattoo. If you want them to take the time to design something for you, you have to show you are serious about the tattoo. It costs you nothing to have an artist take the time to design something, but it costs them their time. Their time is money, so if you take their time you should be paying for it.
“How Much Will This Hurt?/Does This Hurt?/Did Your Tattoos Hurt? ”
Depends on the placement and the person, Yes and yes. This is the least annoying question that gets asked, but it still is one that pops up every day. Yes the tattoo will hurt and yes all the tattoos on the artist hurt them also.