Which hotel?
You can always ask if its possible to upgrade at cost when you check in. I wouldn't hold my breath. They are probably booked up since it's Spring Break, but I suppose it's possible that they've overbooked standard view and underbooked view rooms. If you are talking about the DLH, some rooms from the Marina Tower offer views of the fireworks at standard view price. If you aren't able to upgrade, perhaps you can request a Marina Tower fireworks view.