Being a vegetarian, I already restrict my diet. Add to that, the need for drinks and snacks with low carb content :cry:
I have found I have had to become much more organised about eating and drinking when I'm out :? I used to just grab a packet of crisps off the display stand. At least I can tolerate a diet coke, although I think my consumption of that is probably less than a can equivalent a month.
I'm also very fussy about my tea (i don't think they make it with boiling water a lot of the time), so tend to drink coffee when I'm out. I'm not a coffee drinker, but it seems to me to be the lesser of 2 evils. I don't drink fizzy water because it gives me terrible wind.