The concrete will sit roughly 3 weeks before plastering assuming everything goes to plan.What waterproofing did you do on the SPA / waterline tile? How long are going to let the shell dry before plaster?
What stone is that coping....doing a great job btw, subs seems really good!
PS. Put a drain near that pad, so that the water has a place to go when you want to drain some water from the pool, and or wash the filters. Also add a water spigot for a hose, and power outlet for the robot. Also nice to have a light in that area.
I consulted with the plumber and he said 4x8 would be more than enough so that’s the size I made it. It’s 4’x8’x6”.I would make that pad as long as you can so they don't have to clump all of the stuff on it. That will allow them to stretch every thing out in a line so you have some walking room.