Welcome to our forum.
I am about to install a Marquis into a concrete patio paver (about 18-22 inches deep). I just read, with horror! a problem with mice getting into the spa. Any other things I should know or worry about with this set up? Of those of you who have this, did you regret anything about it? I thought it would be a good idea for the look, since my yard is very small and I didn't want the hot tub to be the focal point of the garden. Thanks. for all of your help
The drain hole won't really be a problem. You will find that most folks on here never use that to drain the spa. I know I use a pool vacuum hose and create a syphon. Come to think about it, I don't even know where my drain is... :-/