Great report, PNW, and it looked like Arlo was enjoying himself. Thanks for the commentary on the MT ATs, I've been looking at those for my H3 in the same size as you have (they'll fit the H3 with no lift), but my current Rotiva ATWs only have about 15,000km (9,000 mi) so it's hard to justify the expense of new ones when those are still doing very well.
I went out to our closest research area this afternoon and ran into the same thing you did; the first branch that goes up to a great lookout and a hikers cabin was gated and locked, so I continued to the gate further in that secures the upper valley, for which I have the gate code, and found that it wouldn't open. I don't know if the gate is malfunctioning (it often fails in the open mode) or if I have to contact the Municipality to see if my code has been deleted for some reason. Of course it's a long weekend here in Canada (Memorial Day on Nov 11) so that will have to wait till Tuesday.