I’m not sure if this how every class goes but mine was a one-on-one class. The instructor was great, and he was definitely very patient with me! If you’re physically flexible and somewhat athletic you’ll definitely be able to be surfing and get plenty of time in within an hour. Otherwise, plan on doing two hours or more. I’d definitely do it again.
They also sell umbrellas / beach chairs. Guys were very friendly and helpful and set it up for my family so they could watch me wipe out on the north side of the pier!