Saw that tour in July (day after my birthday - awesome present!) the only difference beng no In Flames (Mastadon instead). Great show. Children Of Bodom almost stole the whole thing. Lamb Of God were really good too. If you've never heard of the other bands I'll give you a little startup listening:In Flames - Colony (best they've ever done) or The Jester Race (2nd best) Their new stuff isn't very good.
Children Of Bodom (Hate Crew Death Roll or Hatebreeder. The latter one has much more neo-classical guitaring)
Lamb Of God - As The Palace Burns (awesome new thrash. Ashes Of The Wake is just as good)
Thine Eyes Bleed were really good too, but I have none of their stuff so I can't recommend anything.
Have a blast at the show! Be sure to give us a review!