I was recently given the chance to march piccolo for marchingband but it's a yamaha 62! I know it has that no crack wood but i don't know if it will last long though. Should i say anything or just enjoy the piccolo

Is it a school issued instrument? Your band director should know better than to suggest that you march with a wooden piccolo. If it is your piccolo, ask your director to issue a school piccolo for marching band. If it is the school's piccolo, bring it to your directors attention and ask him or her if you should march with it. The weather is really bad for the wood. Changes in temperature make the wood expand and change and any rain could make the wood and pads rot. So you should definately bring it to your directors attention

As far as I'm aware, YPC-62's are made of straight grenadilla wood with absolutely no guarantee against cracking, and no mention of no-crack wood. If there is any other alternative, I would absolutely refuse to march that piccolo, as it will almost certainly come to harm, even if not through mistreatment. It may be that the director has no idea, so definitely bring it to his attention. Marching piccolos (or any piccolo to be used regularly outdoors) should not be made of wood. Cracking is not the only concern. Warping is another big concern. You may end up having to rent another piccolo or borrow one, but if there is a way out, don't march that picc!

I will play my wood piccolo at an outdoor concert, but ONLY if it is 70 to 75 degrees, low humidity, no rain, no direct hot sunlight, and I can park it in its case under my chair if I don't play it for a while. Otherwise I take the shreiky silver one.
While it would be nice to learn and play on the Yamaha 62, it shouldn't go out in the weather. Definitely bring this to your band director's attention.