I took my retired parents on an Alaska cruise. It changed how I see adulthood.

After an unusually sunny trek to Juneau's Nugget Falls with heavier-than-necessary backpacks, my parents were tired and thirsty. When I look back at videos from that day, what stands out is the joy on my mom's face – wide grin, hands in the air, as the cool spray from the waterfall mists her face.

As for my dad? Clearly, he was made for cruising.

At home, he spends afternoons in his hot tub and eats an ice-cream bar for dessert every night while watching TV on the couch. On the ship, my dad embraced a similar routine. At sea he was elated to discover he could pair the unlimited soft serve with his coffee at breakfast.

When my husband and I return from trips and recount our stories, my mom often tells us we have the best "travel luck." I like to think some of that comes from research, planning, and knowing how to avoid problems before they happen.

On this trip, though, it felt especially true. We had unheard-of sunny weather in Juneau. We saw humpback whales up close during an excursion from Icy Strait Point – the kind of sighting that makes you realize just how massive these marine animals really are.

On our first day on the ship, a spout appeared in the water right on cue as my husband pointed out to sea and reminded us to keep an eye out for wildlife.

It felt magical in a way that even the best itinerary cannot manufacture.

Traveling with my parents felt like a total role reversal. I learned to give them decoy times so we could actually make it to excursions on schedule. I also learned to be a little more flexible and let the unexpected surprise me.

This cruise made the trip far easier than a land itinerary would have been. We could spend time together, split up when we needed downtime, and regroup for dinner or shore excursions.

I would be more hesitant to take my parents on a complicated international land trip that required a lot of walking, tight train schedules, and constant hotel changes.

On the last night of our sailing, after a birthday dinner for my mom at the ship's steakhouse, we were preparing to disembark in Victoria, British Columbia.

My mom leaned back in her chair, full and happy, and remarked on how impressive our meals had been throughout the cruise (especially the Alaskan seafood).

Then she had one last question before our final port stop. "So," she asked, "should I bring my water bottle?" By then, I could only laugh.

Taking my retired parents to Alaska forced me to confront the strange reality of adulthood: You can still need your parents, even as they start needing you too.

It was a gift to bring my mom on a trip she had dreamed about for years, and to watch both of my parents experience Alaska with awe.

I would do it again in a heartbeat – though next time, I would make sure everyone had a water bottle before we left home.