Wheaton to Celebrate Halloween with the Second Annual ‘HalloWheaton’ Bar Hop for Adults on Saturday, Oct. 26, and Free Family-Oriented Events on Sunday, Oct. 27. Montgomery County’s Wheaton Arts & Entertainment District will host two days of Halloween-themed events for all ages on Saturday, Oct. 26, and Sunday, Oct. 27. The annual “HalloWheaton” celebration will kick off with a bar hop for adults (ages 21 and older) from 2-5 p.m. on Saturday followed by a free, family-friendly Halloween festival from noon-4 p.m. on Sunday. All events will begin at Marian Fryer Town Plaza, adjacent to 2424 Reedie Drive in Wheaton.