Dude you are almost correct. I just want the best setup without sacrificing function. To me I dont see how just a tube is going to support a table along with everything that will be stacked on-top of the table. I am having a hard time visualizing the application. SO I'm spitballing ideas... Please feel free to suggest or comment.
The only other option is to have the gunite people create a step in the floor so the creepy -crawly does not go up into the seating area. Then I have to scrub/clean that separate. I'm just trying to exhaust all options before I spend the money on a built in..
I think the cleaner issue is a big one. Any table, no matter how it's in your pool, is going to impact cleaning, one way or another. It's easy to compare the hours my cleaner works (and saves me) vs the hours I'd be sitting at a table in my pool. Manual cleaning, or untangling a cleaner hose or robot cable from your table leg(s) is going to get old, fast.
If the table was removable, then you could pull it out for the off season, keep your vac happy, and then deal with the cleaner issue only during the swim season.
I'm with you, I don't see how any sort of pedestal in any sort of receptacle is going to be strong enough or stable enough to work well. Plus, it's a big fulcrum that people are going to be leaning on and up against that's going to be prying away at your plaster (no matter how well that receptacle is installed. Put an umbrella in there? And the wind come's up? Bye, bye plaster. All you'd have to do is forget and leave it open
one time. No way. I'd be looking at other solutions, frankly. An umbrella that hangs over the pool, you know, one of those arched things. Or, I use a shade sail over my pool. 100% wind proof, nothing to trip over, doesn't take up any deck space, etc. Then, if you really had to have a table in your pool, just find a nice looking stand-alone table that can stand up to pool water and sun and drop it in. Done. Take it out when you want. Move it around the pool. Totally versatile. Forget the permanent installation.
Sorry, don't mean to beat up your vision, just giving you another point of view to help you figure this out...