Parking slots, shared parking?

Another lady said he'll be done in 10 minutes and asked us to wait.  20 minutes later, we interrupted them to let them know we had to leave and to ask if we can reschedule, he gave us a bad attitude, just said he was there at 5pm at our scheduled time, indicating it was our fault that we missed our slot.  

It's only been a week, but what are my options if they do not return and the RV just sits in the slot? 

In this case, he gave us ample notice to (most likely) fill that slot, however, I'd like to protect us in the future.

Its surging slot so if you time it right on the buy in (around 10800ish) and the sell (I believe in the next few days it'll steady out at 11300 based on trends last few weeks) it's not too far fetched to net 1000ish as you use the surges to your advantage.

Most seem to want a showing (i am currently making a quick google sheet with available time slots on a Sat morning for my dad to show).

Quote from @Huiping S.: Lots families were flooded from Hurricane Helene.

@Steve K.I would rather goto Vegas and bet on the craps or the slots .

We have 45 RV slots on site.

Kinda like a slotting fee in a grocery store?