Congrats on ordering your X-Pert!! I LOVE mine, and I know you'll LOVE yours!
I agree with JeHanne - 'tight enough' is subjective. I didn't tighten one of my x-joints enough when I put my pole up the first time, and the joint ended up spinning slightly in the pole. Luckily I was able to get it un-spun, and out of the pole, but I'm pretty sure I'm going to have to replace that joint at some point. It left a mark on the inside of my B pole where it moved, but that seems to be okay - luckily i have low ceilings and they sent me a 2nd 200mm x-joint with my pole so I just switched them out. I"m not sure if the damaged one is still okay to use; I"m going to have to send pictures to x-pole and ask them. I'm thinking I"ll have to replace it at some point.
So, make sure you tighten, tighten your x-joints, alternating ends so it tightens evenly, and for the first week, check it before and after each time you pole. You should only have to check it once a week after that. It only takes a minute. 🙂 Enjoy your new pole when you get it!