Go for it
@DaveK 
The Saturday meeting at the Commonwealth Pool can be a bit chaotic with the vast sea of riders. It's like the start of a sportive! I found it a bit confusing the first few times. Anyway here's a little more info for you and a couple of examples of routes. Hopefully it'll be of some help/interest.
No idea what level you ride at, or which group plan to ride, but there are several groups separated by start times.
0930 - the fastest - usually actually leaves about 0935. If you ave 25mph this is the group for you.
0940 - there are usually two groups, a fast 0940 and a second 0940. These tend to be very large and split up in Dalkeith into more sensible numbers. This group is intended for self-sufficient riders and generally does not stop. I have been dropped on this ride before! Usual coastal route
here (2nd 0940 group), but groups often split and has a hilly option.
0945 - slightly slower than the 0940. Often splits at Dalkeith into a hilly group and a coastal group (same as the 0940 route). Example
here (slightly hilly one).
0950 - development ride, for those new to group riding. This is the only official 'led' ride. When I was doing them they never followed any particular set route, but here's one
example.
Whatever you do, enjoy it!
