Hip2Save lets us know about an awesome new promotion McDonalds has going on for a limited time (no ending specified), called "Refreshment Recess." Monday-Friday from 2pm-5pm you can get "buy one get one FREE" beverages! This includes ALL drinks and you can mix and match (equal or lesser drink is free)! Sweet tea here I come! :)
This is only available at participating locations, so you'll want to call your location and make sure they're participating.