I know what you mean, some people don't understand that some of us can't eat everything in sight and not put an ounce on, some of us have to keep an eye on these things, but you're not on your own, there's lots of us here to help and support
When you go for meals out, just try to be smarter with your meal choices. E.g. if there is a chicken breast and veg with potatoes option, pick something like that over the burger and fries. Or if it's pasta, go for something like the arrabiatta rather than the carbonara or lasagne. Curries - go for the tomato based dishes rather than the really creamy ones (korma, tikka masala, etc) They can adjust the spice to your taste if you ask them. They may also cook it without using Ghee if you ask (some places call it the 'Healthy Option'). Ghee is clarified butter which they put in all curries. Asking them not to use it could save you about 6 syns, if not more (depending on how much they use) Chinese - Black Bean is a lower synned sauce, and if you ask for boiled rice rather than egg fried, you save youself heaps of syns.
I have made some lengthy posts about this somewhere on here (I'm good at rambling when I get chance
). I'll see if I can find them and create a new thread, but eating out is always possible, we just need to be smarter with choices