great advice above.
you say that your husband wants to take you out for a meal, do you want to go out for a meal? it is your birthday, and yes of course its always nice to think of going out for a meal on your birthday, but considering the fall out from that (possible weight gain adn 4-5 days to get back into ketosis, the risk of stopping and returning to food etc) with that in mind, is the pleasure you would get worth the risk?
If you are not really fussed about a meal and would prefer to stay on LT, then the above suggestions are really good ones.
If you really want to go for a meal, and willing to take the risk - this is what I decided to do for my Hen night last week. I took a risk, had amazing self disciplne and am really proud of myself - but, it is a risk that only you can decide.
I went to Nando's and had a chicken salad (lemon and herb topping) with feta (med salad) and a few olives, diet coke and no alcohol. when I weighed myself the next day, I was pretty much the same weight as 3 days ago, so in effect, I undid 3 days hard work. for me it was worth it, as its the only time i'll have a hen night, and well birthdays come every year, even special ones come every ten years
unless you have a strong resolve and good reasons, a good plan, can handle avoiding alcohol in the midst of temptation, as well as avoiding carbs etc, then its not worth the risk.
does your husband support your efforts? its easier if he does. if he has weight to lose maybe in return for you coming off - he will agree to starting it with you to suppport you? my OH started with me this time, and its tons easier.
if you think its too much temptation, buy shoes!
have a great day either way. xx