Louise and Sunshine plus cards both give 1st, 4th, and 7th day free. Take these examples for comparison...
Taking my wife to Lake Louise for 1 day of skiing and then to Sunshine for 1 day of skiing:
Costco Passes: $180 for 2 Sunshine passes + $198 for 2 Louise passes = $378 total
Plus Cards: 2 Sunshine cards for $198 + 2 Louise cards for $198 = $396 total
Same thing, but for 2 days of skiing at each of Sunshine and Louise:
Costco Passes: $360 for 4 Sunshine passes + $396 for 4 Louise passes = $756 total
Plus Cards: 2 Sunshine cards for $198 + 2 regular Sunshine lift tickets with $15 discount for $224 + 2 Louise cards for $198 + 2 regular Louise Lift tickets with 20% discount for $198.40 = $818.40 total
Same thing, but for 3 days of skiing at each of Sunshine and Louise:
Costco Passes: $540 for 6 Sunshine passes + $594 for 6 Louise passes = $1134 total
Plus Cards: 2 Sunshine cards for $198 + 4 regular Sunshine lift tickets with $15 discount for $448 + 2 Louise cards for $198 + 4 regular Louise Lift tickets with 20% discount for $396.80 = $1240.80 total
Once you get to 4 days of skiing at each, then it makes sense to do the plus cards.
