1) British road movie 2) Cast 3) Drift 4) Gad about 5) Gad about gaily 6) Jazz around 7) Paint the town red 8) Ramble 9) Range 10) Roam 11) Roll 12) Rove 13) Stray 14) Swan 15) To flirt, to romance 16) Tramp 17) Travel 18) Vagabond 19) Wander Found on https://www.crosswordclues.com/clue/gallivant
Gal'li·vant intransitive verb [ From Gallant .] To play the beau; to wait upon the ladies; also, to roam about for pleasure without any definite plan. [ Slang] Dickens. Found on http://www.encyclo.co.uk/webster/G/5