Bayou Classic Weekend Expectations- HELP

My S.O. and I did something really stupid and booked a NON-REFUNDABLE hotel room for tomorrow which is located across from the Convention Center. I don't live in NOLA and actually had NO idea that this weekend is Bayou Classic weekend. I had to google it to find out what it was. We just wanted a get-a-way for the weekend type trip lol- fun, relaxing, cool. I have never been down there during this time and need to know what the hell to expect. :idunno:

Is parking going to be a nightmare? The hotel has limited parking and said there's a big garage across the street. Will traffic coming up I-10 west be gridlocked? Check-in at the hotel is at 3pm and we live a few hours away. What time would you leave if you were us?? We would like to get there a little early to cat around and kill time.