One may visit this at the end of a restaurant meal (4,4)
I believe the answer is:
cash desk
'one may visit this at the' is the definition.
The definition suggests a singular noun which matches the answer.
'end of a restaurant meal' is the wordplay.
I cannot really see how this works, but
'end' could be 'ash' (I have seen 'End of fire' mean 'ash' so perhaps 'end' could also mean 'ash') and 'ash' is found in the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for cash desk that I've seen before include "Till" , "Payment point" , "Where to pay before you leave" .)