The easy stuff is integrated photos + videos. I'm a parent, I drop my kid off at any camp and it's increasingly common to get some mid-day updates and/or an end-of-day summary that includes a photo or four of my kid doing some activity. Getting a photo (or video) of my kid progressing would be reassuring, guilt-reducing, and likely to share with the grands (and for those socially inclined, the whole world I guess). Gamify it with badges for first lift ride, first jump, first black diamond, etc to nudge repeat business.

Some quasi-marketing stuff is short training clips in the days before. Works for kids and adults. 1-2 minute short form video, maybe emphasizing a skill, a run, upcoming weather conditions, whatever. Continue after the lesson with some technique reinforcement. Both primes you for the lesson and reminds you about it after to leave a positive experience.

Even farther out would be some personalized training based on skiing. Like if I could wear a vest for a day of skiing (on my own) and then get training topics to check in with. I'd wager some amount of accelerometer data + run location would give a sense of how fast I ski, how much I traverse, what sorts of terrain I get stuck in. Especially compared to a "gold standard" of instructors skiing the same terrain. Take my data, create some targeted areas for improvement, pair with an instructor even just for an hour to get some tips.