They do occasionally make exceptions.
If you know someone it's a lot easier and/or if there's something exceptional about you, not just necessarily marks.
Nas
Ghostface
MF Doom
Big L
Biggie
Kool Keith
Cannibal Ox
Pete Rock and C.L. Smooth
A Tribe Called Quest
Count Bass D
+
De La Soul
Masta Ace
GZA
ODB
Rass Kass
Eric B and Rakim
EPMD
Cage
Aesop Rock
Aceyalone
Blackalicious
Canibus
and so many more...
When I listen to hiphop in a club i usually nod my head to the beat with my arms folded not moving in the busiest section of the dancefloor and kick anyone in the teeth who dares to bump into me or say something.
A Ghost show would be fucking off the hook, i would seriously pay a few hundred dollars just to see him.
As for Meth regardless of his material I reckon the show will be dope.