The grass pitch is on trays and rolls out over the artificial surface. The artificial surface is the lower one because:
- For football the first row of seats is level with the pitch, for NFL the first row is a few metres higher than the playing surface. This means unlike when NFL plays at Wembley the first few rows won't need to be tapered off - NWHL stadium can stay at full capacity.
- For concerts the same thing is true. First few rows won't be blocked out by people standing on the pitch so more tickets can be sold.
- Makes the stadium truly multi-use. Levy has said the turnaround time could mean a Premier League / NFL double-header in the same afternoon. This seems unlikely even if it is possible, but it does mean NWHL could stage e.g. a match and a concert on the same weekend.
- Obviously means the grass pitch won't be ruined by other events meaning more events can be held than would otherwise be the case = more money for the club.
Not sure what the extra cost is but to-date the NFL has put £10m into our stadium build which is said to cover some of the cost of this. Long-term it should pay itself back and more besides. Unlike at Veltins Arena in Germany and the Phoenix Stadium in the US, we don't actually have room to store the pitch outside the stadium, so it has to sit under the south stand meaning it has to split into three to avoid the foundations of that stand when it's being stored. This is an unofficial animation of how it'll work:
(credit
https://twitter.com/ACEinBEDFORD)
Meis has been talking about making BMD a 24/7/365 venue which isn't dead on non-matchdays and a retractable pitch would go a long way to making that possible imo. Obviously the upfront cost will be more but your only limit after that is the number of events the council allows at full capacity. But even then, you don't
need it to be at full capacity to have events going on inside the stadium on the artificial surface on non-matchdays.