Son has been twice and it is an amazing experience for the players. I went first year, didn't go last year. It is definitely worth the trip. Very cool how the town basically shuts down for this event. His team has won it each of last two years (last year they shared the title due to rain out with game tied).
If you do go, I'd recommend that you stay in Durango. There isn't much to do in Farmington, and due to the format, you may sit all day waiting for their game in the evening. That said, the format changes this year as they've added teams and now have pool play to determine who advances to the bracket. In years past, it was a straight double elimination bracket. Also on that note, during pool play, teams are staying in hotels. They only move in with host families if they advance to bracket. Again, a departure from past years where every team immediately join host families for the week.
Son's team has always flown into Albuquerque. CM has bus pick them up and drive them to Farmington. There is typically a large contingent awaiting them when they arrive at the civic center (HS cheerleaders escort each player in arm in arm, etc). There they would meet their host families and "move in". They would have a parade and then opening ceremonies, then play would begin the next evening. In the past, they wouldn't play any day games during weekdays. They'd wait for everyone to get off work. All games were played in Ricketts Park. All games were streamed online (pay per view) and were also audio streamed free via the local Christian radio station.
If he goes this year (his team is going, it's just a matter if his schedule can allow it), I may go out, but with the new pool play format, it's a crapshoot, so still undecided. He has a second family in his host family. He has stayed with them twice and they have come out each of the past two years to watch him play a HS game (they've been hosting about 15 years, so have players in MLB, MiLB, College and HS and make a spring trip east every year to see as many of their "kids" as they can).
If you have any questions at all, feel free to PM me and I'll give you as much info as you want.