Don't know other places but all the mountains have them-
Alpine Mountain Ski Area
PO Box 309
Analomink, PA 18320
570-595-2150 ~ 800-233-8100 (ski report)
Alpine Mountain Snow Tubing
Big Boulder Ski Area
PO Box 702
Blakeslee, PA 18610
570-722-0101 ~ 800-475-SNOW (ski report)
Big Boulder Snow Tubing
Blue Mountain Ski Area
PO Box 216
Palmerton, PA 18071
610-826-7700 ~ 800-235-2226 (ski report)
Blue Mountain Snow Tubing
Camelback Ski Area
Camelback Road
Tannersville, PA 18372
570-629-1661 ~ 800-233-8100 (ski report)
Camelback Snow Tubing
Jack Frost Mountain Ski Area
PO Box 703
Blakeslee, PA 18610
570-443-8425 ~ 800-475-SNOW (ski report)
Jack Frost Snow Tubing
Shawnee Mountain Ski Area
Box 339 Hollow Road
Shawnee-On-Delaware, PA 18356
570-421-7231 ~ 800-233-4218 (ski report)
Shawnee Snow Tubing
Tanglwood Ski Area & Winter Park
PO Box 165
Tafton, PA 18464
570-226-SNOW ~ 888-226-SNOW (ski report)
Tanglewood Snow Tubing
I know the one at Big Boulder has a LIFT for the tubes! Which believe me you will want. I don't know if camelback has added one this year.
We have only been to the Camelback one so I can't suggest any of the others. But I would think they're all similar.
On the Sat/sun/monday my opinion is that most people SKI first- so if they arrive Saturday that's ski day and Sunday all full day ski- monday leave day - tube day.
So I would think Sat. Sun would be better. But just my unofficial opinion.