Test Tomorrow!

So I have a drug test tomorrow and I'm a little nervous. I usually smoke around 2grams a day. I haven't smoked since Feb 18th so tomorrow will be exactly 30 days.

Im 5' 11"
165lbs
I don't do a lot of physical activity but I was in Mexico for a week about 2 weeks ago sweating my ass off.
I've been drinking water non stop, odd glass of pure cranberry juice and been taking vitamin B2 and B12 pills for the past week.
I'm not very fat but I do have a bit of a belly and I've been making sure to eat somewhat healthy and minimize the fatty foods.

I'm just trying to get someone's opinion if I'm going to be okay I don't know if it's a lab test or not as my "email" I got says;

"Pre-Access Express + Alc (non-lab)"

But I'm going to a lab to perform the test so I don't quiet understand what it means by (non-lab).

I did a UTest at home drug test about 8 days ago and tested negative but when I tried again 2 days ago I was positive my only reason to believe the difference in results was because the amount of water I drank prior to the most recent test.

Who is making you take a drug test and for what reason?

Taking it for work. Company called CANNAMM in Edmonton, AB.

Your taking a chance...just drink water the day of your test or sub