Hi M, I am gluten and lactose free. Not that many nights out for me at the moment, and bring my own food anyway. If you are tramping, Tesco have a decent selection of gluten free food. Waitrose is best, but you can expect to pay a bit more.
My advice to you would be just to forget about bread and cakes! I know it sounds like the end of the world, but before you know it, your tastes will change.
Just eat fresh clean food. You will feel even better. I do have a taste for meta flakes from tesco for breakfast, would recommend them with almond milk and a bit of honey. 