Just got back from Marathon Weekend, and thought I would share my opinion/experiences on G+. First, we used it for MK & HS, as there's not enough @ AK to make it worth it, and with just my wife & I on this trip, we weren't really worried about missing anything @ Epcot. Obviously, I don't like paying for it, but thought it worked fairly well.
For our MK day, I was running the Marathon, so my wife was in charge - and she hates these things! But she did a great job! We had a late lunch for Skipper Canteen ~3:30, so I told her to concentrate on Jungle, BTMR, Pirates, HM, etc. for around that time. As JC goes quick, she snagged that one @ 7am, then was able to get BTMR 2 hrs after park open. By the time I was showered, and we were ready to head to the parks, we were able to get Pirates. We were able to knock out all 3 rides + get Dole Whips in ~75 mins prior to lunch (yes, Dole Whips before lunch, its vacation!). After we checked in the second ride, we were able to get HM for right after lunch. Finally, there were still plenty left for us to get Under the Sea & Buzz as well. The park was not too busy, but gauging by posted wait times and peeking at the standby lines, I'd say we saved 2.5-3 hours. Jungle Cruise was nearly an hour by itself. Finally, late night we waited for SpMtn (~30 mins) and snuck in SDMT (~20-30 mins) right at park close. We got a lot done for getting to the park around 2:00!
HS was not quite as successful, but we did save ~2 hours nabbing SDD @ 7am, RnR, then TSMM. We waited for ToT & MMRR, and snuck in RotR at closing and only had to wait ~30 minutes. We were able to get a 4th G+ for Star Tours, but didn't really save time with it. That 2 hours saved, however, gave me the time I need for my favorite - Baseline!
