Getting souvenir from Gatwick's terminal: go back with Japanese drink (8)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

"Getting… from…" connects the definition to the rest of the clue, rather than adding to the rest of the wordplay the end letter/"terminal" of [Gatwic]- K + PEE ="go" reversed/"back" + SAKE ="Japanese drink"