Plaster walls are the worst for shelves... they crumble if you use the wrong anchor. @annaf73 is right about the name, but also check if your wall is drywall, plaster, or concrete. I had to get heavy-duty toggle bolts for mine, and it's been solid for a year now. The video guides never mention that part.

Grant531 gets it. Look at his point about catching issues early. That messy script getting cleaned up saves future pain. Sure, debates can happen, but calling it gatekeeping misses the point. A few minutes now beats hours of debugging later.

Frankly, everyone makes too big a deal out of beach weddings. Salt air is just air with extra steps, and if your tools can't handle a little humidity, maybe they weren't that good to begin with. I've done events in humid places with basic gear and never had a meltdown, literally or figuratively. Packing special rust proof stuff sounds like a hassle for what's basically a day at the beach. Just throw your usual kit in a bag and deal with it as it comes, that's what pros do.