I did it with a really good friend and we had a great time. We went in having no idea what to expect and finished 14th out of all the women teams! It starts after dark, which was weird. It was hard to decide when to eat dinner and how much to eat, etc. We ended up at Sanaa and did tasting kinds of food around 5:30 pm.
The atmosphere at the starting line was a big party and we saw lots of fun costumes. It was HOT! (I am from MN, so once it gets over 80 I start to wilt

) There was one pair there in Yeti costumes and I don't know how they didn't die of heat exhaustion. We were in a later wave, so we didn't start until a half hour after the first wave.
It was a very crowded run. Felt like you were always either in someone's way, or trying to get past someone, but people were always pleasant. There were three obstacles: jumping over some hay bales, running through some tires, and crawling under a net. Nothing too strenuous.
Once you get past the running, you keep going and pick up your first clue. It gives you kind of a word/logic puzzle and the name of a station in the next area of AK. For example, you have the puzzle and then have to find Dale in Camp Minnie/Mickey. So once you have solved your puzzle, you run to Camp MM and find the sign that says Dale. You show the attendant there your answer and if it's right, you get the next clue. At the end, you have to use all the clues to solve the last puzzle and get to the finish line.
The after party is fantastic! We rode EE and KRR with no lines. In fact, we just stayed on KRR 3 times in a row without even having to get off. That is a relief when you are so hot from running. They had dancing and some food open in Dinoland too. The Dinoland attractions were all going full swing too.
We are definitely doing it again this year.