Lloyd, at the moment Tommo and myself will be at Swinley tomorrow at 0830am and sometimes riders turn up without pre-announcing, which is always a pleasant surprise.
Meet point is the GoApe/Lookout car park. There are two areas; as you go in on the left is the GoApe area and on the right is the Lookout area. I am inclined to park in the latter (I have a Silver CRV with tow bar bike rack) as the GoApe area can be a bit overfull by the time I return. But late am/early pm it is sometimes a case of grab a space wherever you can.
Pace should be ok, I think I am now tapering down for a long ride tomorrow week so I will be pottering between some fun bits (for me than means flowing sections; eg Whole Nine Yards and Seagull, that I like to take at a reasonable speed). If there are any youthful adventurers on the ride (their names seem to start with Da

) then there will be plenty of rest time available when they want to play or alternatively you just rest while watching the other idiots.
You will not be left behind and there are plenty of regrouping points between all the singletrack sections. If you have not been to Swinley before then you really should at some point.
Visit the
http://gorrick.co.uk/swinley/index.php website re: getting a pass. Note: half-year Swinley passes start from Oct 1st, so there is probably no point buying an annual one.