The drying time is not on the listings, however this grout kit takes only a few hours to dry after application.
We used it to grout waterline tile 6" x 36(2)' x 18(2)' and it was plenty.
No, this is not recommended for glass tiles. This grout is sanded grout.
No this is grout for tile they sell a product called pool patch for that
3 hours. read the instruction