I ran them a lot back in the 1980s, when we were in high school - but I don't remember much about what we did back then. I ran the Elven Crystals as a trilogy in around 2000, at my local RPG club, which went reasonably well - all six characters died in part two, and most of them died in part three - and I trialled a 3rd edition D&D version of Shadow on the Mist that also ended in a TPK.
I adapted several of the adventures for my Selentia campaign http://members.optusnet.com.au/~pelari/campaign.htm, including Shadow on the Mist, The One Eyed God, Hunters Moon, and Prince of Darkness. Several of the NPCs from those adventures became recurring characters: Lord Karvala, Prince Fengil, and most importantly, Taliriana, the elf from Shadow on the Mist, who became fascinated with the dwarf's flintlock pistols and joined the adventurers to travel the world and experience the wonders of gunpowder.
Cheers,
Gary Johnson