The big problem with Splash Landings hotel is its layout, the architect and designers need shooting really! Nothing flows, everything is cluttered, no room for expansion, etc.
Margs was badly designed before they altered the stage or added the pizza place, it doesn't help that its just a long corridor with the bar at one end (with the odd added corridor to the side, which is now the pizza place), a stage in the middle and then the entrance at the other end, then chuck in a smoking area out some fire doors near the bar. Its just a bit of a mess. Worse of all there really isn't that much seating in there for everyone. I think they need to expand the seating into the reception area (and not just the crappy metal seats they chuck in there when its busy, but proper comfy themed seats) and then remove the lego area and make that a nice seating area. It would also be so much better if that large void area where the water feature is and windows are, that would add loads more seating space, and also remove the loud noise from the bar to flambos and vice versa.
You almost need to rip it all out and start again! Move the stage, bar, seats, etc, and make it a much more practical area.
Don't even start on the design of the pool, or the outside pool. Its no wonder they have never expanded it, they are very limited in what they can do with it because of the bad design!