I say "was" because they ran out of beer by about 3:00 Saturday. But they were stocking four different cans and growler fills of Wheaty Pants until they got emptied. Merch also onsite.
They say they will be open again on Thursday. Their Facebook page is the best place for updates. https://www.facebook.com/portrextonbrewing/
Check out my Untappd profile: https://untappd.com/user/shorlin