I'm from Anchorage and don't see anything on the ABD itinerary that you couldn't book/do on your own for a lot less money.
For us, the value of ABD is access to exclusive experiences (behind the scenes/after hours tours, front of the line access/avoiding crowds), safety/security, and/or having local guides in places that are very far out of our normal comfort zone (for ex, we'd book an ABD for China since the language and culture are vastly different from what we're used to, but probably not for France). Alaska doesn't really fit any of those categories - like I said, you can book the experiences I see on the ABD website yourself. Driving is easy (Anchorage is more or less a grid pattern, and isn't that big anyway; it's also hard to get lost when there's only one road going South...). Obv everyone speaks English.
You say you love a lot of activity. Alaska certainly fits that criterion! Depending on when you go, you could go fishing (take a halibut fishing charter out of Seward or Homer; go salmon fishing), clamming, hiking, kayaking, rafting, gold panning, berry picking, mountain climbing, ice climbing, dogsled mushing, snowshoeing (also play snowshoe softball), play hockey, ice skate, go skiing (Alyeska),...