In this one, I was on vacation (how topical!) at some kind of beach resort. There was a floating platform at the end of a jetty, made out of four docks laid out in a square, with gift shops and cabins along them. They were really keen to sell me shit while I was there.
At one corner of the dock platform, I found a vertical tunnel enclosing a spiral staircase. It lead down to submerged observation deck, which was weighed down and kept submerged by the floating platform gift shops, cabins, etc on top of it.
It began to rain. I found myself in the unique position of being able to watch raindrops hit the surface of the ocean...from underneath the surface. The owner accosted me as soon as I came back up. She was an old woman dressed in a halloween costume of a witch.
Apparently I was meant to pay before going down there. She informed me that a "brine run" would be included in the observation deck admission fee. A brine run was a scuba diving tour she'd lead me on, where we'd collect brine and I could take some of it home with me. No idea why anybody would want this.
Relaxing on the beach later, I dug a huge hot tub sized hole which filled with sea water, like a little private pool. There were shrimp and lobsters in it however that kept trying to pinch me. I set up a barrier out of netting so I could keep them out of my section of the "pool".
Later on when the sun went down, I go to the hotel and meet up with an ex girlfriend who I am apparently still dating in this dream world. She explains that her parents insisted on sleeping in the same room, so we don't get up to any hanky panky. I was disappointed, but mostly weirded out by them watching us as we tried to get some sleep.