Racquetball is a racquet sport played with a hollow rubber ball in an indoor or outdoor court.

Here is a short video explaining the rules

Court Bookings - Courts are booked in the same as if booking to play squash. A booking sticker is purchased from the machine (peak times) and placed on the booking sheets which  are posted on the notice board every Saturday/Wednesday. 

As with squash, It is recommended that players try to sell on courts if unable to use it.  A league is also in operation.

For the full rules follow the link