Wear joggers and boxers , easy to change etc especially after the RT you will want to pee pretty quick , also get a toilet card , as said carry a pee bottle in car for on way home , I found it most interesting the process and it was like a family in the waiting area. You get to see the same people every day , how many fractions again ? You will be surprised how quick it goes , once in the rhythm . They usually play a little music in the treatment room I remember βbat out of hell β !