I wouldn't call it "predictable" but some risk being understood that it was only going to be a temporary pier, with a wide variance in the viable timeline to use it, and the go ahead to achieve at least partial mission success. 30%? 40%? 80%?
Just because there were big waves last year doesn't mean there will be this year. One could attempt some kind of long term forecast as a predicate to a go - no go decision, but it doesn't guarantee success or failure. If we had any meteorologists to speak to the state of the art, that would be something.