Suboxone/ subutex how long in you system?

I was doing a taper from an opiate i was on for long time so for preventive measure my doc gave me to tabs of subutex on Wednesday at 1:00. I didn't no take more or need more as the i had already tapers so low and a very min side effects. My question is am i able to drink today (me and my husband are going to wedding) or is the Subutex still in my system? its been over 72 hours.