we hung at the sandbar in green bay many many times. we idled up until the water hit 4ft-ish then coasted up and would ultimately get out and walk it up. we anchored in 2-3ft water regularly. sandy bottom there's zero issues with it. rocky, we'd leave in deeper water.
always turned boat around and faced platform toward beach so when leaving no need to reverse it.

not sure there's a blanket statement for this. in idaho we would never tie up or even get close to the beach due to rocky bottom. wisconsin I would not have had any issues walking boat up into 1-1.5ft water. it's sand and if floating and not touching it's not going to do any damage, just shallow water. even if there were some small rocks, there wasn't enough wave action and it's sandy enough to not worry about it.