I had it happen once last year where I got there early and parked fine. the lot filled up as it does regularly during peak summer weekends. They designed it poorly IMO and it was SUPER stressful to get out. I swung as wide as I could to start my left turn out of my spot. I backed and jockied a lot. In the end, I had to have the suv (light green in the diagram) move their gear that they had put on the pavement just behind their car AND had to have people spotting me. my trailer cleared the trailer to my left (black in diagram) by INCHES. It was nuts. and that was with a midsized truck and a trailer for a 21 foot boat.

Short of pulling out and turning right and driving out of the parking lot to turn around and drive back in (and get further back in the already building line to pull the boat out) there wasn't a ton of available options. I was really thankful I didn't have to unhook the trailer.