Congrats to you and your All State student. You don't have to nor should you spend all your time at the convention in the rehearsals. There will be many beneficial clinics going on and you need to attend all you can. Meals are not provided for your student. I would suggest that you meet them for lunch just to touch base. Take time to enjoy the convention. By all means spend some time in the display area and see all the good stuff. Welcome to Texas and the Texas Band World.