Changes for Memorial Day – Monday, May 28, 2012 (From boston.gov)

• Closed: All municipal offices, including Boston City Hall, schools, libraries and community centers.  
• Trash & Recycling: Trash collection will remain on the same day in Charlestown.
• MBTA: Operating on a Sunday schedule: www.mbta.com. 
• Parking: Parking meters not in effect. All other rules apply. The Tow Lot is CLOSED Sunday & Monday. 
• Street Sweeping: There will be no daytime sweeping on Monday 5/28 (except overnight on posted arterials). Resumes 12:01AM Tuesday as listed on posted materials. 
• Traffic Advisories: Road closures on Sunday, May 27 in Central Boston for Boston's Run to Remember. Full list here.

Businesses that have indicated their Memorial Day plans.

• Zume's Coffee House: Open 7 a.m. to 12 p.m. Saturday through Monday.
• Toni Anns: Closed Saturday May 26 & Monday May 28th.
• USS Constitution Museum: Hosting All Hands on Deck: Memorial Day Weekend Family Fun

if you know of what any other business is doing on this holiday, please add it in the comments.