Spousal privilege is one of those points of law that tv writers seldom get right. A person can not be compelled to testify against their spouse, but can voluntary do so.
For the batchelor party, Fitz wants 'Texas Mickeys'. In Canadian booze slang a Texas Mickey is a 3 liter bottle of whiskey or vodka or rum. They are popular for heavy drinking Canadian parties and even come with little bottle pumps because drunk folks should never try to pour from a 3 liter bottle.
On the DUI's front porch kneewall railing is the word "FAILTE". That is Irish (Gaeilge) for "Welcome".