Instead of taking your bridesmaids to a pricey salon, find a hairstyling school in your area. They usually charge 1/3 (or less!) the price then a regular salon.
I've been getting my hair cut at the local beauty college for a couple years...it was fine til this last time... I got absolutely butchered! The supervisor tried to fix it but I still came out lop-sided! Oh well, it's only hair and will grow back! But for styling only, it should be ok. It does save money!