I have a season pass how does it work if I want to bring a friend? Can I bring more than 1

No

You can bring one for 30$ a ticket

Only one friend at a time, check the website for info

2021 Dorney bring a friend is only allowed during the week and not for wild water kingdom. You may only bring one friend per season pass holder.

Awesome fun me and my son had

You have to purchase the discount tickets through the website when logged in as a season pass holder. Same area you make reservations. I believe you can only use this discount during the week.