A good time in Galway's disco, regularly visited with converted car (5)
I believe the answer is:
craic
'a good time' is the definition.
(I've seen this before)
'disco regularly visited with converted car' is the wordplay.
'regularly visited' means one should take alternating letters (letters are taken at regular intervals).
'with' says to put letters next to each other.
'converted' indicates anagramming the letters.
The alternate letters of 'disco' are 'ic'.
'car' with letters rearranged gives 'cra'.
'ic' after 'cra' is 'CRAIC'.
'in galway's' acts as a link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for craic that I've seen before include "Irish pub fun?" , "In Irish bars you'll get this" , "good time" .)