I'm guessing the crowd will be less than the numbers they get usually, in part because there's not many dedicated fans in Hamilton to start with - and they're not likely going to do an hour roundtrip to go and watch them play.
It's largely been driven by the fact that Cambridge will do work for them, get everything ready etc, while at Beetham Park that wasn't going to be an option.
From a selfish perspective, I hate it, as it adds an hour to my trip in which I already have to be there way before kick-off, and the facilities there aren't ideal. It also means that there are no games in Hamilton at all, aka where the core of the franchise is.