This seem to be rather common in my area. (The take one or whatever amount you drop)
Most people don't care, and still grab whatever they feel like though.
If I ever come across a TB hotel, with loads in it, I'll see if I like any of them, and read the description to see if I can help it on its way, but if I come across one with 2-3 in it, I'll usually leave at least one, for the next bloke.