Some of these details you're asking about with the concert depend on what level of school you are. If you're 5A/6A there will be a long line. If you're 1A-4A you can easily just walk into the hall with no wait before the 3A concert. (I've never actually gone to the 4A concert specifically separately, so not sure if a line forms for that one - I don't think it does)

As the other responder said, you don't have to handhold all of the time for the kids. I tend to make sure they make it to the first rehearsal, encourage them to make it over to the convention center for the lunch breaks and then we'll walk around and look at instruments and such. Make sure they understand to stay with a group of students - it is a city.

I've had a couple students before who were more timid and we had to spend more time with them. Try to figure out a way to do a special dinner on Friday or another night where maybe their parents meet you and you celebrate the kid. This year Valentines day is on Saturday, so it hopefully won't be as difficult to do that.

Congrats to you and your student!