Why the hands question matters most
Two people can ask for the same set and one of them will wear it for three weeks and the other will break a nail on Thursday. The difference is almost never the product and almost always what happens between appointments.
Somebody who lifts weights needs a shorter free edge than somebody who does not, regardless of what either of them wants. Somebody who types eight hours a day is better off with a squoval than an almond. Somebody who gardens needs the shortest thing on the menu and will be happier for it.
Answering that question honestly is the single most useful thing you can do in the first ten minutes, and the temptation is to answer it aspirationally.
What we will tell you
If the length you are asking for will not survive your week. If the reference you brought will not read at that scale. If your nails need two weeks of a strengthening overlay before anybody sculpts anything on them, which happens perhaps once a fortnight and costs less than what you came in to book.
You can override any of it. You will get the honest read first.
The quiet
It is a working room rather than a silent one. People talk, and Mira will happily talk for two hours if that is the appointment you want. What does not happen is a phone conversation at the chair, a television, or music you have to raise your voice over.
If you would rather be left alone entirely, say so at the start and you will be.