The Path and a Riddle

Is there a riddle along the path. There must be. I went through 45 rooms and not a single bathroom! There is a series of letters formed from the second half of the path, as follows:

From Room 45's U to our exit at one, there are a series of letters. Add them up and rearrange them and it will spell a phrase or riddle. (This seems much more probable than other 'solutions' offered where several letters are leftover and the whole effort was merely to spell something simple, like 'shoulders'. Shoulders, though has two meanings, only one of which is known by most. The other relates to the final riddle.)

A list of each room here:

 45) M and U (The 'W' can be either an M or a W.)

23) No letter, tricky.

8) S, E

12 C (top of ladder), D, U

39 R, O

4 E

15 C (the moon), E (the shadow on the wall)

37 C (The side of the table), O (the shadow of the net)

20 S,S

It wasn't long to rearrange as:" SUCCESS! DO U C MORE?"