Well if it says up to 15 days then that is what you have to allow. Yes I agree it probably won’t take that long but you cannot plan say a 5 day trip out of Thailand when you have no idea how long it will take. It depends on many factors including have you provided everything correctly, how many applications they have to process before yours etc
yeh maybe I’ve never noticed what they copy but one hotel I frequently went to was just photo page but I don’t see the big deal in it. I have nothing to hide
yeh all the hotels I’ve stayed in only used to copy passport photo page but now they copy my entry stamp aswell. At the end of the day if you arent doing anything wrong then i cant see why it is a big deal 👌