Other mistake: Butters tries to get a "seamen sample", and is on it for two days straight. The mistake: You can see Butters' head in the school classroom, while he's still supposed to be in Cartman's bathroom. (00:15:30)
Continuity mistake: The kids earn a dollar and hold it up. Then we see another shot of what's meant to be the same dollar, however the serial numbers on it have changed.
Answer: Scottsdale is a well-liked destination for fun; resorts and spas, outdoor activities like hiking and rock climbing, golfing, cultural events, and a bouncy nightlife. It's generally considered an upbeat and convivial place, exactly the sort of environment the gloomy Goth kids would consider to be awful.
Purple_Girl