I'm back from Waveform and glad to say it didn't rain much. I had been looking forward to being pleasantly surprised by the food choices available to me (lactose intolerant, soy protein intolerant, allergic to nuts) but unfortunately this was not the case. There was actually only one place suitable for me to eat at, Tibetan Kitchen, which was delicious, filling and really good value. I ate there every day and even got some food to take home for post-festy dinner! I did get a bacon roll from the tea tent one day, but the entire festival ran out of bacon on the second day :(
It was only a small festival so there wasn't much in the way of food places. There was a Thai stall which looked good but I didn't trust the open kitchen to be safe enough in terms of cross-contamination from nut ingredients. The other food places were overwhelmingly vegan (apart from the cheese toastie wagon), so I couldn't have the soy pancakes, or vegan cakes as they all had soy ingredients in. By the last day there was only vegan breakfasts available, and I thought £6 for onions and mushrooms was a bit steep as I wouldn't be having the vegan protein options.
So, to sum up, this festival was great for vegans and lactose-intolerant folk with plenty of variety and interesting options, but when you add a nut allergy and intolerance to soy protein into the mix it becomes a minefield again.