Line jumping (cutting in front of other guests) is strictly prohibited. If observed line jumping, you likely will be barred from that attraction for the remainder of the day. Any additional incidents throughout the same day will lead to automatic dismissal from the park without refund, no matter what the reason!
Once you leave your place in line, you have forfeited it. Additionally, saving a place in line, including saving a space for someone in the restroom, is also strictly prohibited. If a group of guests wish to enter an attraction together and one or more of their members are not present, they should wait until all members that wish to participate together are ready and then enter the line together.