Long Live has filled my fancy insulated steel growler (also a lovely gift!) a few times and refused a few times. I get it filled in pleny of places. Brewers are understandably fussy about personal growlers. If it is not clean and your beer tastes funny you will blame them. Certain beers fare poorly in a growler (frozie cup, nitro styles). It can help to assure them you are clean growler person. Sometimes they insist on washing it for you but not if they are busy.

Growlers are fun to share and the most eco friendly way to take beer home. I get annoyed at the haughtiest beer nazis, like Tilted Barn...

Moniker is the best place to go with your growler.