There should be no problem with several rolls, the casinos still need quarters and even pennies to pay the ez-pay slips ins cash. They used to have counting hoppers, that would count coins--I haven't seen them in a while.
Some banks will accept coins (even from non-depositors) and not charge a fee. Many supermarkets (for a small fee) have machines which will convert coins into cash.
[Recently, in an Atlantic City casino I wanted 4 quarters for a dollar, and was refused: "we don't deal in coins anymore." If I insited I probably could have gotten my 4 quarters...]