I’m on the Quantum now. Had a great time in Skagway. Our ship was a couple of hours delayed leaving port due to a rumored rockslide that blocked the (RCCL shore excursion) train from returning. Again, only rumor, as I heard this from a local. The first train made it out, but a rockslide occurred after that, cancelling all other trains.
The actual ship port had no issues whatsoever.