Many photographers are encouraging brides to have their formals pictures taken prior to the ceremony. While this may free up time during cocktail hour, some brides are feelings as though they have to see each other prior to exchanging vows, despite wanting to be traditional.
It's possible to stay traditional and have plenty of time to enjoy yourself during cocktails. Try to allot a little extra time between getting ready and the ceremony. This little gap can be used to take pictures of yourself and groom not seeing each other such as bridals, family, and bridesmaids. Just that alone will save a lot of time for later.
Once the ceremony is over, there mainly only the entire bridal party and family pictures to be taken. After these few shots are taken, encourage your guests to enjoy cocktails as you stay behind with your groom. This allows for more intimate moments and also allows your photographer to move more quickly.