No seating for these key English dipping into treats? (8)
I believe the answer is:
standees
'no seating' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.
'these key english dipping into treats?' is the wordplay.
'these key' becomes 'E' (musical key).
'english' becomes 'E' (abbreviation as in OED).
'dipping into' means one lot of letters goes inside another.
'treats?' becomes 'stands' (I can't justify this - if you can you should give a lot more credence to this answer).
'e'+'e'='ee'
'ee' placed within 'stands' is 'STANDEES'.
'for' is the link.
Can you help me to learn more?
(Other definitions for standees that I've seen before include "Upright folk" , "Rush hour commuters" .)