I'd do the gig.
Free hotel, airfare, transportation and 5K cash? If that was the case, I'd certainly do it without thinking twice. I could get shot today walking on my way to the grocery store in my neighborhood with no money in my pocket...literally. Happens almost every day in Chicago. Not because I'm in a gang, but because these gangbangers don't know how to aim and don't give a rat's butt about who they hit with their wild bullets. Happens so much it sickens me.
This gig sounds like a BREEZE:
Fly to Mexico. Get transported straight to the hotel. Hide out in hotel until it's time to head to the gig.
Get transported to the gig. Play the gig. Get transported back to said hotel. Hide out in hotel celebrating with a case of delicious cervesas until morning. Get transported to airport. Get on plane smiling with $1k in each of your pockets. Go home. Celebrate!
Seriously, I'll do the gig. If they're paying you guys $5k, it's gotta be a decent venue. This won't be some bar down a dark alley on a dead-end street, unless they're lying about paying you guys this much to play.
5/5 of my band mates would do it too, I'm 100% sure of it. If they can they fly us in from Chicago, we'd do it tomorrow. No offense, but your band sounds like a bunch of wussies.
We'll take the gig right now...PM me.