Bar in park is about to open for dinner - it's in guide that appeals to cruciverbalists (8)
I believe the answer is:
preclude
'bar' is the definition.
(I've seen this before)
'park is about to open for dinner it's in guide that appeals to cruciverbalists' is the wordplay.
I cannot really understand how this works, but
'park' could be 'rec' (short for recreation ground) and 'rec' is present in the answer.
'it' could be 'e' ('e' can mean 'electronic' which is similar to 'IT') and 'e' is located in the answer.
This explanation may well be incorrect...
'in' is the link.
Can you help me to learn more?
(Other definitions for preclude that I've seen before include "Obviate, prevent" , "bar" , "Debar" , "Prevent, prohibit" , "'Prevent, forestall (8)'" .)