Hello, TomTom.
This is a really interesting question as it underlines how we equate special food with celebration. Your decision to leave it is a good one. Stay on track and be really committed to only take what's allowed on your plan, and you'll get to goal this summer.
It may make more sense to stop that link (celebration=food and drink), and make a list of other ways of celebration: watching a great funny movie, going to a comedy club for a show, seeing someone you love but don't see often enough, sharing a bath(!) or having someone take the kids overnight, if you have some, a trip to the coast or a river for a bracing walk followed by a hot LT drink, buying some bubbles and blowing them, in fact anything you like or makes you happy but don't do often. Make a really long list and then choose something off the list each week, or when you get to milestones like getting into the 17s, or 240lbs or whatever.
Btw, you'll also want to learn how to cook better curries with less fat and carbs, or how to choose lower calorie curries when you go out so you can keep it off when you get to goal. ou cana slo make 'rice' from cauliflower which sops up those lovely juices well. There are lots of good recipes around.
Good luck,
Ali