On board the full time, except that after about 3 hours we went back to the gate to allow anyone who needed to get off to do so. But frankly, I was pretty comfortable the whole time. After about 2 hours they brought out water and snacks which was nice.

The pilot wanted us on board because the ground stop was randomly lifted every hour or so, and he wanted to be ready to go when it happened. In fact, one time while we were connected to the gate, they released the stop, but we could not make it off the ground in time so lost that window.