The idea hasn't been implemented yet, so you can't opt out yet.
If it goes ahead the option to opt out would no doubt be included with the renewal information of your ST
So nearly 30% of ST are regularly buying guest tickets, which means that over 70% aren't but in their wisdom the club have decided that you need to opt out if you don't want it, rather than opt in for the much smaller numbers that currently use it.
This just smacks of it will only be £1.67 a...