Casinos are the ONLY dump locations to be had around here, unless you want to reroll. One bank will take rolled coin at a fee of $1.50/box, first $10K free of charge per month. I am seriously considering opening an account there and paying them beginning with box #1. After factoring in gas and tips, etc I'd probably be money ahead nevermind saving a lot of wear and tear on the old bod. With a limit of $500/day most places it takes time, miles and tips to dump. But there are no banks around here that take bulk loose coin. The casinos take coin so they figure why bother with the expense.
Yes, they know about silver. Not to mention that some are also collectors and cull anything that might fit in an album. I've exchanged collecting tips, etc with several cage people. No, they won't sell you a bag and as a rule they don't keep halves in the trays.
Rascal