I cruised HAL's Amsterdam to Alaska last June with my son who was 15 yrs old at that time. It was the cruise of a lifetime! Alaska is gorgeous, and HAL is our favorite line. My son has cruised Disney once, and requested all of his future cruises be back on HAL - we're doing #4 in a couple of weeks.
I did not use
dvc points - notice the fine print - you'll not only tie up points you still have to pay the $75 fee PLUS port charges up to $200/person! I rented slightly more than 1/2 the points I'd need for this next HAL cruise, and had the cash to pay for it all including port charges. Last year I didn't think about dvc points - I just paid cash.
HAL ships are gorgeous, and more elegant than Disney. Without up to 1000 kids on board, HAL doesn't have to worry about kids running wild, climbing on furniture, and generally being rough on things, so they're able to have nicer things. The art is gorgeous! Service is terrific, and it's a very refined, yet not stuffy atmosphere. HAL has a kid's program - Club HAL - my son enjoyed it as a kid, as a tween, and as a teen. The big difference is there are far fewer kids, so they all get to actually know each other and aren't merely one of a huge pack of kids.
I highly recommend Alaska, and HAL is really my top choice for a cruise line regardless of destination. I wouldn't use my dvc points, though - but I would rent some to raise the cash needed to pay for the cruise. I'm sure that would take less points than booking thru member services!