Came here with some friends on a Saturday night, and it was surprisingly not as crowded as we thought it would be. The entrance is tricky to find but when you see the large fence with "Arsenal" on it, turn right and look out for the entrance in the lane on your left (there's a little signboard outside the door)
Before deciding on the type of cider you want, you get to sample up to 3 types. The tasting line wasn't too long when we were there; however, I can imagine it being annoying when it's crowded because it's right in front of the door. Indoor seats and tables are pretty limited as well sadly. We were lucky enough to walk in just as a party was leaving. I guess the outdoor seating area was closed because of the chilly weather.
As for the cider itself, they have a bunch of options ranging from sweet to bone-dry, so there's something for everyone! My friends and I got two growlers, one Young Plum and one Archibald. I'm not a fan of cider, but I enjoyed both a lot, especially the Archibald (semi-sweet). It's also better to purchase a growler if you're planning to stay because you get refills for a cheaper rate. With a nice environment and very friendly staff, Arsenal is definitely worth checking out!