one hour break?
go to Physical gym.if you are member of it, just located in the vicinity.
go to "Man King Fung" supper in a Chinese restaurant, reasonable price.
or go to visit pet shops around there, if you raise dog or cat.
I think the venue must be fully book at that period, or you can consider to rent the big room (2 tables) in 5th floor, but it is inconvenient to share table with other players if you are using multiple-ball training.