Both Uses

wallow
in
Their Eyes Were Watching God
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He never told her how often he had seen the other men figuratively wallowing in it as she went about things in the store.†
p. 55.2 *
There was one of those big blow-out laughs and Janie was wallowing in it.†
p. 69.6

Definitions:

(1) (wallow as in: wallow happily in the mud)
to roll about lazily, especially of an animal in mud or shallow water; or the muddy hollow or puddle where it does so
(2) (wallow as in: wallow in self-pity)
to excessively give into a desire (indulge)

This is often said of something negative such as self-pity when no attempt is made to move beyond it. But it can also be used without negative connotation to indicate that someone is enjoying a lot of something such as luxury or rest.
(3) (wallow as in: a wagon wallowed through the mud)
to move with difficulty; or perhaps just to move through water or in a rolling/wave-like manner
(4) (meaning too rare to warrant focus)