Hello Kenleylayn,
Eating out can be pretty difficult, especially in P1, fajitas are a good choice - just ask for the cheese and sour cream on the side and use it sparingly since it is full fat (like you mentioned). When I go out I try to order dishes like; salmon & veggies, grilled chicken & veggies, a chicken salad with olive oil and vinegar on the side.... even a good cut of steak with veggies will do! There are options, you jast have to ask the waiter to work with you.
As for the beer, it probably will throw off your losses. I can relate to having the nightly "wind down" drink, I love wine and even currently belong to 2 wine clubs... but to give P1 a good run you really should cut out all the alcohol. I started making tea my wind down drink at night and, honestly, I don't miss my wine right now and it has been 11 days.

Maybe you could post your food log so that some of the SB experts can help you find out why you are up an lb.

I know you posted that on Friday, hope this helps even though it is late!

Wishing you the best on P1!