No. Just show up and have fun
You only need a reservation if you want to dig in the Phantom mine and that reservation should be made 2 weeks ahead of the date you intend to dig. Otherwise you do not need a reservation. Bear in mind there are 3 areas to mine at Wegner's. 1) the tailings, 2) the Crystal Forest, and 3) the Phantom mine. You need no reservations to mine tailings. The Crystal Forest doesn't require reservations, but transportation to that area runs only at 3 times during the day. You would be wise to call & confirm those times during the winter. The Phantom definitely requires reservations 2 weeks ahead. It is distinctive for the black coloring of its crystals.
It also depends on which area you are planning to mine. Call and verify.
Not normally, but it is good to check what times are available. They need to meet minimum before going to the mine.
Thanks! Your answer is awaiting moderation.