My only reservation with Club De Mar is stopping EG choking the living bejesus out of the toe-rag who dished up the river-water last time we were there . . . I agree that the venue lends itself to the numbers. It is a little Al Fresco-ish, and that's no bad thing. An advanced booking would be essential, and we should probably give people an idea of the cost per capita so they have the option to give it a miss if it's a bit too pricey.
Controlling the flow of lucre would be easier with a set menu/ smaller tables.
There will be non-drinkers amongst us (though they can probably be counted on one finger) - they won't want to be shelling out shed-loads of Euros to feed SPs red wine habit. We manage OK on the golf tours - there again, we operate a daily whip amongst those of us intent on druinking the local supplies dry. I wonder if our resident IFA has any thoughts on group money-management? :p
The harder the conflict, the more glorious the triumph