In the simplest of terms, a drug's volume of distribution is that volume of bodily fluid into which a drug dose is dissolved. Therefore, if we know the dose that was given, and we can measure the serum level (concentration), then we can calculate a volume: Volume of distribution = Dose / drug concentration.
As soon as you can make the reservation, do it, but the general consensus is at least three to six months in advance of the date. By three months out, couples have a good idea how many guests will be attending and they can plan a menu that doesnât conflict with their wedding day.
Now, there are obviously going to be times when you may not need a rehearsal. If the ceremony involves just you, your partner, and the officiant; you have a straightforward entrance and aisle; and music that doesnât need super specific cues, you can probably skip it.