In the past I've taken a couple of 20 litre bag in boxes of whatever pale ale we were packing in the brewery on the week leading up to the festival. Was generally okay but last time I did it on a hot year I took a 4.2% pale but was drinking so much water due to the heat that I struggled to even get tipsy! Ended up supplementing it with top ups from the cider bus 😁
We started canning during lockdowns - prior to that we bottled so I wasn't able to take any smallpack - so last year I took a variety of our beers from low ABV pales, some NEIPAs, some DIPAs and some Impy stouts - worked well as I could choose what to drink depending on the ABV and how pissed I felt at the time!