Ben A.
Yelp
The novelty (and it seems for some, utility) of being able to purchase a cold, frosty beer at the Happiest Place on Earth makes Bayside Brews a popular spot in this corner of California Adventure. In addition to Karl Strauss beers, they serve several other well-known ales and lagers, along with a few other odds and ends like snacks.
Many folks seem to like the pretzels. They are good, but I believe a part of their attraction is the fairly reasonable price relative to other Disney eateries. For around ten bucks, your 21+ year old self can delight in a cold beer and a sweet cream cheese-filled pretzel. Try doing that at the Angels game a few miles away.
Interestingly, the conspicuous Karl Strauss beer truck seems to be more crowded and better-known... Hardly a line over on this side of the park, which may also be due to the KS truck being in the midst of the food court/wharf area.
If you're meandering about in the heat, somewhere between Goofy's Flying School and the miscreant, brain cell-destroying soundtrack of Ariel's Undersea (Mis)Adventure... And you gotta' fever for a cold adult beverage in a place decidedly designed for the kids... Bayside Brews has the amber elixir to slake your thirst. Only seven more hours until the park closes, dad... And I'm sure you DVR'ed the Colts game, right?