It was our first Gigafinals (in fact first year we'd heard of Delancey at all) and I must say it was all excellently run.
The Manchester Gigafinals were particularly buy though, so many other activities going on and around the venue that having planned to get there 30 mins early to prepare, it turned out ditching the car en route and running the final mile to get there with 2 mins to spare before the first game.
I urge you to look for an alternative location with better access, but if it remains at the same venue, at least warn competitors... Check with the venue what else is on that day, learn from the past and advise getting there a good hour or two early - at least.
That aside though, what a fantastic event overall.