Here is a few things to consider.
1. You doh't have to spend any money except to get there.
2. You don't have to buy anything but then again....
3. You could meet lots of members of this forum, that is if you want to.
4. You could ignor members of this forum and then after the show, tell them you saw them but ignored them
5. You could possibly meet members of this forum that would give you all sorts of rare coins free.

6. You might find that one coin you always wanted and at a fraction of it's value.
7. You could ask people where they lived and then go to their houses for free food.
8. You could learn a real lot about coins.
9. If married, great way to get away for a few days.
10. If not married, might meet a someone of the opposite sex that is interested in you.