Seven days! Cool! As for wine ... that can be tough because in that context it's easy to rationalize alcohol as "food". For many this is fine ... for me and many others, it's lighting the fuse. Best not to do it.
The excuses I've used (I'm not saying to lie ... but there's always something that fits)
Wow, I'm tired, I'm going to pass on the wine.
I worked out today and I'm dehydrated. I'm going to stick with water.
Just not in the mood tonight.
I think this food goes so well with seltzer, soda, tomato juice, whatever
You get the idea.
For friends who know me I just say ... don't light the fuse.
I hope you have a wonderful sober meal with your friends.