Your holiday might not seem that far away but it is quite a while on LL, you will have learnt a lot by then from the counselling, your LLC and your group, but you have a choice.
Take the packs with you and continue, I know someone who had a 2 week holiday in Portugal and stayed with the programme. Or you can choose to eat, but stick to low carb and low fat which will minimize the damage.
I wouldn't make a decision until much nearer the time though.
I started about 6 weeks before Christmas which included a week away, and I worried about it for ages, but when I got there I was fine. The counselling does help you sort out your head and I managed the whole thing staying abstinent.