It's a common question with a common response: No.
Let's face it, we're never really ready for a show. There's always one more thing to do, one more item to create, one more display to improve.
The days before a show are spent agonizing over what to make that is going to sell at that particular show.
And then there's the endless visualizing of the booth display. Maybe that print bin would work better on the other side of the booth.
In the end, you do all of the preparations you can. You make your best guess as to what will sell at that show. And, you display your work in the best possible way with what you have.
Finally, you get to the show, you set up, and you do the best job you can at selling your work.
And then you go through the whole process all over again for the next show. Ah, the life of an artist.