LOVE LOVE LOVE Cast Iron. The problem, however, is that Cast Iron is heavy. So when loading vehicle/trailers, and every pound counts, it can be an issue.
That being said, don't buy CHEAP cookware either. When we first got our TT, I bought a set of pots/pans from the Dollar General (or one of those stores). First time I tried to cook with them on the gas stove in the TT, they just warped, the Non-stick peeled off, it was literally a complete waste of money. Only the "Pot" was some what usable if I only boiled water in it.
From then, up until now, we were transferring our pots/pans from the house when we'd take the TT out. This included my cast iron fry pans. We have since (a month or so ago) gotten a good set of calphalon cookware that is also Induction capable. It was about $200 from Bed Bath and Beyond, but we always have dozens of their 20% off coupons in reserve. (so many that even if we buy a pack of gum, we use a 20% off coupon).
You don't need HIGH end, pots/pans, but you do want good pots and pans. I now steer away from the Teflon and non-stick in general. If you are at all experienced in cooking, you can handle most situations of "Sticky" stuff pretty easily. Much like you would with Cast iron.
As an FYI, I have a HUGE cast iron pot (almost a cauldron) that I use at home when making my chili. It can make about 10 Quarts of Chili (which I also can in the jars). Love cooking with it, using it, but not carrying it. (It's HEAVY).