Once per season usually, it helps with,
Speed: Waxing your skis helps them glide faster and more consistently on the snow.
Smoothness: Waxing keeps your skis smooth and prevents the base and edges from feeling dry.
Water repellency: Wax helps your skis repel water, so they don't stick to the snow.
Ski health: Waxing prevents the base of your skis from drying out, shrinking, and whitening.
I used to work at the The Lake Louise Ski Resort in Alberta while I was in college
Sorry to hijack the thread but I didn't want to ignore your post :)
Anyway...back on topic:
Did you call your Aunty today hon? Remember...t was her birthday.