DO NOT APPROACH FROM Route 999. Not even on foot.
The container is not at posted coordinates. That is a parking area. You MUST park at parking. Solve this puzzle to get appropriate coordinates in the park. You will need to walk from parking and then bushwhack to final. It's easy in winter especially now that they built the second pavilion. It's relatively flat, too. In summer, it will be overgrown.
Santa is preparing for his big flying night. Like any adult involved with multiple individuals, sometimes he goes through a list to get to the name he wants. That list will help you find the true coordinates of the cache. If you don't recognize a name, maybe it's not a reindeer. "Not" often corresponds to zero.
Vixen Powder S'more CandyBar Prancer Donner Comet
Donner Cupid Dancer Dancer Comet Blitzen Rudolph
Congratulations to Wolfman on the First-to-Find.