I performed at one wedding where the groom was 40 minutes late...when he arrived it was by helicopter so he certainly made an entrance!
Try to enjoy planning the wedding- minor details can be stressful but on the day everything comes together, so enjoy the experience!
I like to discuss all the details with the couple via email or phone, and then thesis followed by a contract and deposit to secure the date. I can offer the couple advice on music choices for their ceremony or I am happy to take requests. About a month before the wedding I get in touch with the couple just to double check final details.