That seems to be a bit of a strange question to ask, but of course you can join as a non-drinker. When I joined the British Army, at the beginning of 1966, the "tradition" of hard drinking was much more widespread. This was a time when yellow handbags were stashed in every available corner out on scheme and our unit OR's club even had it's own LWB Landie for resup. But, strangely, I never had any problems whatsoever with being a teetotaller. Everyone just accepted it, so I imagine you'll have no difficulties. Best of luck.
Yes of course. It's no longer the army of the 80's and 90's where you were generally an alcoholic that smoked. Nowadays many of the young lads cant afford to drink because they've bought a flash car that they cant afford so live on ramen noodles for the month. Or they dont want to spoil their pretty boy gym bods.
In the 80s and 90s I drank enough to kill a civvy. Nowadays I rarely touch the ale and have plenty teetotal serving friends.
Just dont be a social leper though and you'll be fine.
The only drawback is pissheads telling you the same joke every 10 minutes but, the advantage is, you can borrow lots of money from them and, in the morning they remember that money changed hands, you then convince them that it was you doing the lending and they owe you X amount of dosh, double whammy!
Dinner nights tend to get reallly boring at about 2200 when everyone else is pissed and I was just waiting for whatever guest was there to leave so that I could thin out all the seniors that were not drinking that day, due to work et al. Then I would leave, early.