Not a big deal..... Just takes a little getting used to & best to use it a few times in a controlled environment. Make sure the seals aren't too tight, especially around the neck. If your veins are popping out and your face is red... They are way too tight. Try the inversion techniques a few times to see what it takes to right yourself.
Some divers use gators or other restriction type devices to help keep air out of the foot area. Just be vigilant in the beginning about how much air is in the suit and what position you are diving in. After a bit it just become second nature.
Most importantly.... No Peeing in a drysuit!!!
Richie