Dance and drink with beau regularly (5)
I believe the answer is:
rumba
'dance' is the definition.
(rumba is a type of dance)
'drink with beau regularly' is the wordplay.
'drink' becomes 'rum' (rum is a kind of drink).
'with' is a charade indicator (letters next to each other).
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
The alternate letters of 'beau' are 'ba'.
'rum'+'ba'='RUMBA'
'and' acts as a link.
(Other definitions for rumba that I've seen before include "one's on the floor for it" , "Cuban folk-dance" , "music one can dance to" , "number of steps" , "What to perform" .)