People in the new artist rendering bar definitely look more dressed up than a QS.
The blueprint found by @Jwaire last September showed a path from the pool to the bar. It would have been to the left of the artist rendering you shared. It's possible they changed things, but it would have been strange to have people in bathing suits in a full service bar.
I believe @aka Charles and @ehh analyzed the diagram back then and pointed out what looked like walkup coolers similar to Capt. Cooks coolers.
Just noticed the new artist rendering appears to no longer have a seating area on the second story from the lobby. (Should be on the second floor where the wall of windows is.)
If they changed things, I wonder how people at the tower pool will get beverages?