Two Tiered Garden Cart FC100

it says "smooth rolling cart" in the product description, but some of the reviews say the wheels are not functional...? Do they actually roll, or no?

can this be used outside, uncovered?

Do you know if the item (before set up) fits in a luggage? I live in Mexico and I´m planning to order it while I´m in the US. Tks

What is the weight of the unit?