While the ground tour is interesting enough, everyone needs to save up $395 and take the flight once in their lives. (The money helps keep these babies flying so folks can get the smallest taste of what a mission by the Mighty 8th was like).
I took a ride on "Sentimental Journey", run by the Confederate..... oops, I mean "Commemorative" Air Force based in Texas. Takeoff on a commercial airliner is a pretty flaccid experience compared to the vibration from all those piston engines revved at the end of the runway. A B-17 without a bomb load can scoot pretty briskly too!
During the flight, we passengers cycled around through all available locations (no tail gun or belly turret, sorry). Big thrill is sitting at the bombardiers stool in the greenhouse in the nose with the whole earth spread below you. (That was one of my dad's jobs, the other was at the navigator's station just behind.) Yep, you get to play with the Brownings at the waist & nose too.
Now, you can get a reasonable and free thrill by standing in the prop wash on the ground, but there's nothing like the real thing. Just do it!
Im saving!
My Uncle did ride in the nose as a toggler on some of his latter missions.