In reading through and preparing to run Waterdeep: Dragon Heist (looking at Xanathar, Spring variation) I was wondering about mechanisms/methods of gaining entrance to the Cellar Complex (the section starting on p. 83 of the adventure). I think I'm missing something simple.
The Spring subsection (p. 85) states that
you come down via the wig shop into B1; there is a walkway on B2, but no walkway on B3, plus the sewage is 3 ft deep.
Is the expectation that
PCs will wade through the sewage from B2 to B4 via B3,
or is there some other expected/standard method PCs would likely take?