You can also wait until you arrive at the restaurant to let the CMs know when you check in at the podium. Even if you add the celebration now, you'll still want to let them know when you check in as a reminder. The typical things that are done (e.g. confetti, dessert, champagne, etc) aren't prepared until you arrive at the restaurant. Much of it is at the discretion of your server so some will fuss over your celebration while others will ignore it. Also, wear your celebration button or ears.