AAALL right - I went there, admittedly long before rush hour, but there appeared to be rather enough space, and hopefully the situation will be similar on Saturday around noon.
So, for anyone who may be coming from outside London and not be sure where exactly we are meeting up, the place is this (up the staircase):
Nearest tube stations Embankment on the north bank and Waterloo on the south bank.
Now, you guys tell me where you'd like us to pitch our tents, so to speak, so that I know where to park myself when I arrive there.
This is the grassy area to the left of the entrance:
And this is the decked seating area (there's more at the bottom of the garden, on the left):
(yes, the "vase" in the foreground on the left [b]is [/b]a toilet bowl...)
There is an area with small wrought iron tables and chairs too:
I think we should be able to stay in the garden, and bring some of our own drinks, as long as we also buy a few drinks from their bar. Anyone know otherwise? I decided not to ask