1. I haven’t been asked for a c-card on repeat visits, have you dove with them before?
2. Never been to a shop that didn’t make you check and sign for your nitrox mix
4. Unless you paid for a guided tour the DM just gives the site brief and may not even enter the water. If they do he/she is just another diver and free to do whatever like collect weights. The DM and crew at Looe Reef Resort won’t even help you back onto the boat, they’re primary job is selling chicken dogs and snacks.