As I mentioned, before a show is rarely a good time to meet any performer, especially phantoms, who just want to get in there for the 45 min. make up routine.
As far as gifts...flowers are fine for the ladies, but most cast members can't turn down "goodies". A box of good chocolates or a nice basket of some NY pasteries always makes a yummy treat that rarely makes it to the next show.
Don't count on the dressing room visit unless you know a cast member. Besides the phantom dressing room is the size of a bathroom and backstage is not exactly impressive unless you're partial to crowded, old, catacombs.
Waiting outside after is the best option to catch the cast.
www.pbentertainmentinc.com
BWW regional writer "Philadelphia/South Jersey"