VoN is great for xp and loot. There is usually at least one newbie in the group and it can be fun helping someone learn the raid. It also has a fun layout and is actually a challenge at level, especially if you don't have twinked gear.
That said, there is not much room for error, plenty of chances to wipe, only two shrines. Also, it seems to draw some of the . . . less desirable players . . . . I would say that nearly all of the names on my very short squelch list got there following a VoN run.
Hmmm, I guess that brings me to VoN 1st time raid tips!
1. If you are brand new, says so! New people are great!
2. If you don't know, ask!
3. If you don't know, DON'T TOUCH! Don't talk to the NPC's, pull the lever, click the item. Don't touch.
4. If you have a +4 STR item, Bull's Strength will not boost your STR any more.
5. If you have a +4 WIS item, Owl's Wisdsom will not boost your WIS any more.
6. Listen.
7. If someone puts up a DDoor, take it.
8. Do not put up your own DDoors.
9. Do not help with the puzzle.
10. If someone asks, "Who has the XXX" actually open your inventory and look to see if you have the XXX, then, close your inventory and stop breaking rule #3.
11. The boss in the first part of the raid is immune to elemental attacks. Stop fireballing and acid bursting it.
12. Don't chain lightening it either.
13. Your mana and health will reset before you go to fight the dragon. Don't save mana in first part's boss fight.
14. I know he said it's a baseball diamond and you're supposed to go to 2nd base. But don't run run over the pitcher's mound to get there.
15. Don't range the dragon. She will wing buffet everyone to death. It will be your fault. I saw you using that bow after the leader told you not to range the dragon. I don't care that you didn't bring any melee weapons. Just stand there and cast cure light wounds on me.
16. Re-read rule #6 again. This implies not babbling over your mic about how great you lighting bolt wand is. Less talking because we're all trying to listen to the leader. We can't hear him because you just spent two minutes explaining that your superior glaciation gear makes your sleet storm spells uber L33T.
17. Do not break rule #3. Pretty pretty please.