You will be ok chick, TS isn't that hard once you get into the swing of it, maybe even easier than WS cos food is just completley out of the equation, so you don't have to battle with not eating 100 extra calories or whatever, you just dont have to make the decision at all! That's the main reason I chose it, because I just want to stop thinking about food all the time and stop it being so important to me! Thin people aren't bothered about food, and I want to train my brain to look at it that way. So see TS as an opportunity, not a deprivation.
Not to mention, if you stick to TS 100% for all of June except for your hen do day (and if you're gonna drink alcohol that day you MUST eat some carbs during the day and for the evening meal else you could get ill) then you'll shift the stone you wanna shift
xx