Thanks! As it happens, they wanted the wedding the weekend before but the indoor part was booked. They had the ceremony the next weekend. Lucky for them it stormed the original weekend, and their day was mid 70's and sunny perfect! It's definitely a gamble!
Outdoor weddings aren't so bad if you get an overcast day with little or now wind. Bright sun is a nuisance even with flash unless you can get close...But few people get married inside a church nowadays.