Blackpool's marketing have really mucked this up here, as you're not the first person I've seen confused about this.
They are currently selling the VIP boarding pass, which gives access for one ride early (IE, yesterday, today, tomorrow or Tuesday). They're now priced at £25(?)
You then have the boarding pass for when the ride opens, which gives you access to the park, one ride on Icon and a special certificate, priced at £16. I think that lets you ride before the ride opens to everyone in the morning too.
However, Icon is included in wristbands for all ride access. They have not made this clear whatsoever, making it sound like you have to buy an extortionately priced boarding pass to ride.
No doubt the marketing push is there to make as much money as possible, but it really has left a lot of people confused.