Santa’s sleigh does not provide blankets. Only the smaller private carriage do.
They have blankets but taking an additional blanket is an excellent idea.
Layers - base layer non cotton against skin, wool socks, water proof shoes (like not tennis shoes with lots of mesh ventilation) tuck your shirts in to keep from losing heat from the torso area, beanie, gloves, scarf, chap stick, hot cocoa. 😊
Warm up, put on snow bots take hot drinks with you
Wrap up very warm take some hot chocolate with you
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