Quote from: Gronan of Simmerya;920552AAAnd we're back to the AD&D 1st edition DMG and Gary's insistence that you must keep a strict track of time.

The initial assumption, that sadly died very soon, was that each player was an independent agent and that adventuring together was the exception, and adventuring alone was the norm... or at least that there was no fixed "party" composition.  I don't think I ever played with the exact same group of PCs, or even the exact same group of PLAYERS, twice in the year and a half or so I was active in Greyhawk.

It means that you have to end each game session at a "rest spot" of some type, but in the long run I think it's much healthier for the campaign if you don't try to maintain "one group of heroes tried and true welded together at the hip."