To see this fairground attraction, good publican goes by coach (5,5)
I believe the answer is:
ghost train
'to see this fairground attraction good' is the definition.
'ghost train' can be an answer for 'fairground attraction' (I've seen this before). I am unsure of the remainder of the definition.
'publican goes by coach' is the wordplay.
'publican' becomes 'host' (both can mean a landlord).
'goes' becomes 'g' (this might be a standard abbreviation of which I'm unaware).
'by' means one lot of letters go next to another.
'coach' becomes 'train' (both can mean to instruct a sportsperson).
'host' after 'g' is 'ghost'.
'ghost'+'train'='GHOST-TRAIN'
Can you help me to learn more?
(Other definitions for ghost train that I've seen before include "funfair ride" , "Fairground attraction" , "Spooky ride" , "scary ride" .)