If you're going to a concert in front of the fountain be sure to get there at least 2 hours before the show to get a good view, especially if it's a well-known act.
If your purchases exceed $100 for that day, your parking is free. Take receipts to concierge's booth and they will validate your parking free for that day.
3 hours parking for free at the Grove. If you exceed 3 hours and don't buy anything somehow, just grab a magazine from Barnes and Noble to get validation. Better than paying 13 bucks or whatever.
If Lucifer decides to bring ruination to humanity, can he please start with the people at this place and then after they are all dead he can change his mind. Seriously.