Greg,
I think it’s worth it. My first model-specific trip was the IPMS Nats at Phoenix in 2004. I had such a good time that I have gone to seven Nationals to date.
My circle of friends have ranged from Orange County CA, Orlando FL, Telford England and Tokyo Japan to attend model-related events. We are all just average Joes that save our pennies and vacation time for that special trip.
At the 2004 Nats, I spent close to $600 on model stuff, but have bought less and less as the years went by. At the 2018 Nats, I bought only two kits, one of which was for a friend. I think I still like model shows because the best part is seeing how far the other modelers take it. I used to think shopping was #1 but realize it’s the models on the table that really make the trip worth it.
For me, entering a model is stressful and can kill the fun in a build, but since we have to haul ourselves so far, it would be a shame to not bring something. It would be like staying in a Disney World hotel and not go into Disney World.
Oh wait, WE did that. I got a crumpled piece of paper thrown at me by my boss when I proudly announced the fact when I returned to work.
Anyway, for those who have never been to a Nats, try to do so at least once. Take a model or go stag. And don’t worry about stuff. You might like it!