It's hard for me to imagine they won't do some improvements on the beach. The TTR beach is definitely lacking compared to other beaches in the area, and with such a huge makeover, and tall tower overlooking the water, I think they would be remiss not to at least invest a little into the beach area.
Could it be that the sand they had there was used in the construction process? Like for the base of the pool.
Generally they don't use beach sand for construction, it's too fine and has too much salt. The base for the pool is concrete covered by the sexy pool girl tiles. T
Just saying they may have dumped the sand needed on the beach where it wouldn't need to be cleaned up afterwards but could be blended into the beach sand