Observation on the radio about Band Aid's space for The Tourists outside perhaps
I believe the answer is:
camp site
'aid's space for the tourists outside perhaps' is the definition.
I can't judge whether this defines the answer.
'observation on the radio about band' is the wordplay.
'observation on the radio' becomes 'site' (I am not sure about this - if you are sure you should believe this answer much more).
'about' says to put letters next to each other.
'band' becomes 'camp' (camp is a kind of band).
'site' after 'camp' is 'CAMP-SITE'.
Can you help me to learn more?
(Other definitions for camp site that I've seen before include "Ground for tents" , "In which to pitch a tent" , "Place for tents" , "temporary place for shelter" , "Place to stay on holiday" .)