I would probably prefer to picnic as Brenda and I intended to go for a 7km walk after arriving around 5pm (should take around 1 1/2 hours - Brenda is in training for a NZ walking holiday later this month), have picnic and then do the twilight shoot of bridge/weir. Well that was our plan.
I will check with Brenda to see what she prefers but the I don't think the walk will fit in well with the timing for the club - anyway, will get back to you and if everyone else wants the club will probably fall in with that option.
BTW, the weather forecast is looking favourable for Saturday evening.