Snooki's Hubby Jionni LaValle -- I Spent My Honeymoon in DUI Court

If Snooki and new hubby Jionni LaValle left their wedding reception in a car with tin cans attached, it's a safe bet he didn't drive ... because we found he was on the heels of a drunk driving arrest.

Jionni spent the first weekday as a married man in court, where he copped a plea in his criminal case. He was arrested August 7 on Interstate 80 in Totowa, NJ at 3:30 AM after cops noticed him driving erratically.

Jionni pled guilty to DUI on Monday and had 2 other charges -- unsafe lane change and careless driving -- dismissed. His license was revoked for 3 months and he has to attend a drug and alcohol education class.

Snooki can relate ... she was arrested in 2010 for public drunkenness on the Jersey Shore.