While the invitation says "formal" attire, this means Sunday best or more technically, Semi-formal. "Black Tie" attire is not required or expected.
The hotel has paid underground parking, and as taken from their website is priced as follows: Valet Parking: - Hotel Guest Overnight Valet Parking: $34.00 - Daily Valet: $15.00 Daily and Overnight Self-Parking: - Hotel Guest Overnight Self-Parking: $24.00 - Hotel Guest Overnight & Oversized Parking (over 7′): $45.00 - 0-30 minutes: Complimentary - 30 minutes-1 hour: $5.00 - 1-2 hours: $9.00 - 2-3 hours: $13.00 - Each Additional Hour: $1.00 - Daily Maximum: $25.00 - Lost Ticket: $50.00