Parking lots I- Reserve a portion of at least one lot for an outdoor food prep area. Install a temporary kitchen trailer or three. Figure out a workable menu of mostly grillable staples (chili, burgers, hot sandwiches, etc; probably a lot like you'd see at a summertime fair/festival). If I can manage tables and awnings of some kind, great, but I don't think those would be feasible without a lot of upkeep.
Parking lots II- Have a valet-style curbside equipment drop off. You pull up, drop your skis/boots/boards/poles, get a ticket. Then you go to a parking lot as follows: Lots closer to the lodges are reserved for people with disabilities, people 55 and older, and families with young kids, say 5 and under. Otherwise able bodied people have to park further away. There will be buses, but with social distancing, they're not going to be full and I can't afford to pay four times as many bus drivers to accommodate a 25% capacity limit with downtime for more frequent sanitizing. This keeps the more at risk people off the buses and at the same time reduces risk of someone's toddler getting run over because they were too small to see over the hood. Boot up/gear up at the car as much as possible. Then walk/get dropped off at where you left your skiing/boarding stuff and claim it.
Lodges: Open but very limited; mostly for hot chocolate/coffee breaks, visits to the equipment and rental shops, guest services, etc. Mask use required if required by local regulations; otherwise highly incentivized. Maybe free coffee or fountain soda if you wear a mask-something like that. Some space reserved entirely for employees- ski patrollers, instructors, maintenance crew, clerks, etc. People who are there to work will need a place to stow gear and such, or just be able to duck in and get a quick cup of joe without waiting in line too long. Also, bathrooms. I'll pay someone to do hourly sanitizing if that's what it takes, but there are too many people/situations for whom outdoor portajohns in winter are too problematic.
Trails: Might have to limit the trails that are open to the 2/3rds most consistently used ones. Gotta save money on snowmaking, grooming, etc. Definitely don't want to do that, but it's on the table.
Rentals: Troublesome. For most everything except the boots, maybe establish a no-man's land zone where the tech moves in, drops your skis and poles in a stand, then moves back as you move in to claim your gear. Boots, maybe it'll be a trial and error process where the tech gives you a likely to fit pair, you sit back and try them on, and then back and forth until the fit is made. When stuff is turned in, it gets sanitized and stored for next time.
Lessons: Group lessons to no more than 3 or 4 people per instructor. Morning and afternoon temperature monitoring for all students and instructors. Pre-registration strongly recommended, but there will be ones available day-of for a hefty added fee.
Day care: Limited but available by reservation only. Morning and afternoon temperature screening for clients and caretakers, or hourly for hourly clients if needed.
Gut feeling is that people will be looking for something that gets them outside. Here in NH, the parks and campgrounds have been holy-moly full pretty much since they were allowed to open. And we know people were skinning and backcountry skiing at the end of last season. I think things will continue in that vein, which means there's an opportunity here to introduce more people to skiing and boarding. Maybe I'd look at partnering with the local ski shops or gear reps to offer more demo days. Definitely take a look at offering snowtubing if I don't already have it, for the Friday and Saturday night crowd.