If you're a stateside metal fan and the lineup is comparable to a European festival, then this is comparable price wise plus the longer flight time, dealing with transportation to and from an airport in a foreign country,etc. That too can be stressful, I've done it twice going to Keep It True, once going to Headbangers Open Air and once to Wacken, and it was worth it but just saying.
All bands play twice! so if you really like a band you can see them possibly twice if they don't conflict against another band you want to see.
Also I plan to try to go to this solo if the lineup warrants it. Anyone up to splitting a room with four beds to keep the costs down, inside berth?