Its ethnic and summer festival times, one of my favorite food attractions of summer along with farmers markets and grilling in the open air on the Harbor Islands. Unfortunately I am not in the area this summer, but I wanted to open a topic to share dates and food recommendations. This coming weekend is the Arlington Greek festival (6/1-3) which is very popular with hounds because it offers several spit roasted animals (lamb, pork), as well as pastries, sweets, and other attractions. Its also the date of the first Brazilian "Festa Junina" which are traditional festivals scheduled around days for Catholic saints which often celebrate rural traditions and as such feature harvest foods -- in Brazil today these are largely held by schools, but in Boston the various Brazilian Catholic churches host them some of them for 15+ years now. The first one is in Everett which is a strong Brazilian Catholic community and a strong food focus.
Many of the festivals in Lowell (Folk Fest 7/27-29, Southeastern Asian Water Festival 8/18) have food booths which are popular with hounds, and festivals in Cambridge (Cambridge banks of Boston Dragon Boat Festival 6/10, Riverfest 6/2, Carnival 9/9) also feature a variety of food boths. There are hounds which travel to the Southcoast for the extremely popular Feast of the Blessed Sacrament (Madeira Feast) August 2-5 one of many in the New Bedford/Fall River area, but most of the local Portugese Social Clubs have annual events which are simply published via word of mouth.
From other hounds I learned about Serbfest in Cambridge (early September) featuring some spit roasted meats and sausage, as well as Burmese and other unusual festivals. The North End Feasts and Processions are very popular as a tourist attraction, but if you keep your eye out there is decent fried calamari, shucked bivalves, and other delicacies hidden between the fried dough stands! Boston itself hosts not just a number of ethnic parades, some of which offer traditional foods, but also its own West Indian Carnival (in September) at Franklin park.