FWIW - With respects to Snow Summit - We go up there for Thanksgiving every year. Last year for Thanksgiving Weekend they only had Miracle Mile open as the one and only run - no others were open. They had only upper Summit Run open and then you had to cross over to Miracle Mile midway down the run - bottm of Summit run was not open. Only one chairlift was open. Pretty sure it will be the same thing this year.
I learned to snowboard at 50! woo hoo!