I'm assuming by "a magical evening" that you want to see the fireworks. I'd suggest going up early, eating dessert, and getting a receipt, then use the receipt to go back up for the fireworks from the deck. Or settle for a table that is not by the windows, order your dessert and wait for the fireworks, then go outside to watch them. You may have to go early for a window table and hold it longer than you would like to in order to just eat dessert.