People tend to check in during these times:
America runs on Dunkin', and DD Foursquare runs on You.
The early morning crew is less than to be desired. They always ask for smaller bills (like a $5) so they don't have to make change and can never seem to get your order right.
Avoid the ice cream and try to stay away after 7pm. Nothing is fresh anymore.
Location no longer takes Discover credit card