Also Hammersmith & Fulham RFC Veterans played the curtain raiser before the 19:30 KORolling subs, players go on for 10 minutes, come off to have a drink and then trundle back on again.
Uncontested scrums, but that won't affect you as 4th official.
Alan - best tip is don't do it ! Have a beer or two and watch the fun instead.
There will be a constant stream of "past their sell by date" legends interchanging, their coaches arguing about this that and the other.
When I first heard about it I volunteered to AR(I happen to be working currently at the sponsors, Just Retirement) - that would have been perfect, but last week I heard that they have two lined up so I have been asked to do 4th. Still good to be part of it and I'll have my kit just in case!
They're were a few bloody noses and black eyes, in what was a friendly match.