Honestly, I don’t think either of them quite do it. I see where you are going with the whole halcyon Brideshead summer thing, wanting to imply carefree, long, lazy summers from days of yore. However, rather than hint at this in an evocative, the overall effect is more a pastiche press ad in the Bakewell Courier for the local outfitters.
Also, you really need to address the copy. It, too, needs to be written in a similar vein to the period you are trying to evoke. I can’t ever imagine Waugh using an adjective like ‘corking’ to describe anything that didn’t involve the chink of crystal and the lapping of the Cam on the side of a punt.
Oh Sebastian, how perfectly wonderful. Do bring Aloysius.
The trick is to evoke an idea, of long lazy indulgence – either, as you are trying to do, with the salad days of times past, or perhaps more directly with the subject at hand. I feel the golf thing takes us too far from what you are trying to do, so there is a bit of a jarring disconnect. As you are trying to link the name CO2 with freshness, luxury, etc, perhaps focus more on a link between the name and the intended emotion, using champagne bubbles. People will then make the direct connection. By all means, dress this up with the 30s privileged backstory and set the scene. The important thing is to create the connections in people’s minds that you want them to make. If you are too obscure and distanced with it, then you just end up with disparate ideas shoe-horned together and it will work against you.
Hope this helps.