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.
The rehearsal dinner invitation should be sent out anywhere from 3 to 5 weeks before the dinner (or even before that if many guests will be traveling from a distance), and the look and feel of the invitation should reflect the formality of the dinner.