NewEnglandSkier13;c-39243 wroteAt least in Maine, the only ski area that I know that doesn't use wickets is Shawnee Peak.
Yes, I was surprised to see that they switched to RFID this year. Probably because some people were cheating the system, as they rarely checked lift tickets.
When crafting Remontees-Mecaniques series, I usually try to take a picture of the ticket. And there have been a few times I have written that the ticket is a "souvenir," as the ski area is going to RFID the following season.