I've only been boarding a few times, but this pre-boarding routine seems to work for me.
1. Rest up with plenty of sleep the night before
2. Breakfast before heading out. (doesn't have to big, just enough to keep energy levels up)
3. At ski level parking lot change into ski socks and boots
4. Stretch and ride!
s and a spare shirt in the bag in case its necessary. As for the 4-wheel drive, it depends on the weather and mountain conditions. I usually bring one up just to be on the safe side.
My friends and I carry hydration backpacks while we board, so we have gatorade/water while riding. I also like to carry a few granola bar