Ali and Christian were fantastic tour guides! Really great balance of fun, trivia, history, and tons of pun jokes suitable for all audiences. I threatened to tell all of their punch lines in this review to force new material, but I’m not actually that mean. If you can request Christian and Ali, I’d highly recommend them. If you can’t, I’d still highly recommend the tour. And definitely book the combo... they say four hours, but it doesn’t actually take that long unless there is a massive group and some are scared (scared folks take a long time to do the suspension bridges).
If you’re wondering why the combo tour is four hours and the single tour is three hours, it is because those times are meaningless. You’ll finish in under four hours subject to the above disclaimer. And if you only do the woods course, then I’m guessing you’d be done in around two hours, but the woods course is far weaker than the fins course. If you only do one course, then do the fins. But be prepared as the suspension bridges are legitimately a bit scary (but if you’re brave, then Christian will mess with you a bit - in a totally safe way - and show you the best view of the mountains from an upside down angle!).
Summary: great tour. Ali and Christian are great, request them.