Great Dane cavorting in genteel eatery (3,6)
I believe the answer is:
tea garden
'genteel eatery' is the definition.
'tea garden' can be an answer for 'eatery' (I have seen 'Outdoor eatery' mean 'tea garden' so perhaps 'eatery' could also mean 'tea garden'). I'm not certain of the 'genteel' bit.
'great dane cavorting' is the wordplay.
'cavorting' indicates an anagram.
'great'+'dane'='greatdane'
'greatdane' is an anagram of 'TEA-GARDEN'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for tea garden that I've seen before include "Open air cafe" , "Public space serving scones and cream etc" , "Outdoor eatery" , "trombonist" , "Outdoor cafe" .)