FYI, Loop workers, a small group of Puerto Rican food tents and PR businesses are set up in Daley Plaza right now. So, if you have not yet made it to the Humboldt Park trucks, a reasonable alternative awaits. The food stands right now represent Latin American and La Bruquena. Only the former was open at 11, offering pasteles, empanadas, papas rellenas, alcapurrias, tostones, maduros, fried pork, roast pork, chicken, yellow rice, and perhaps more. (No mofongo, alas.) I had an alcapurria, which was quite good. It had a very complex and somewhat fishy filling, making me think it has some bacalao (salt cod). The pastel was fine, but came wrapped in an impossibly large parchment that was hard to handle in the wind. Beware of achiote-tinged grease. Empanadas and pork looked good, while the chicken looked not-so-good. Skip the so-called helado de coco, really a wimpy looking paleta from a Brooklyn company (what about our own great nieves de coco/fresa vendors??), in favor of a cold Goya nectar from the company's booth next door. For a buck, the guanabana was a good call. If you've been looking for a big wooden mortar and pestle, a local guy is selling nice ones.