We're coming to Boston this weekend to visit a few colleges. We will have two boys, 14 and 17 with us. We're driving in on Friday and doing two college tours, so won't be done til around 4:30p. I'm guessing we'll be pretty drained after driving and two tours. We'll be staying at the Colonnade, so for Friday night, I thought we'd just go to the Prudential center and have dinner/wander etc. Saturday we have a tour at Northeastern that should end around 12:30. We're looking for something to do for the rest of Saturday (we'll be staying over Saturday night), that might give us a "feel" for the area. Unfortunately, we don't have much time in Boston, so we're looking to see the most in the short period of time.
I've read reviews on the Duck tours, trolley tours, freedom trail, and most reviews are good for all these things. Now I'm overwhelmed and not sure what to pick. What would you experts recommend for us first timers?