We had a soft-sided, wheeled cooler when we boarded on 8/17. We had it full (but no ice) with soda in cans and some wine cooler bottles. We had anticipated boarding with it ouselves along with our carry-ons, but the porter at the curb assured us it was all right for him to take it with our other luggage, and I quickly took another luggage tag out of our documents and placed it on the handle. Thinking about it now, maybe I should have worried about a bit of rough treatment and the wine cooler bottles breaking - but we had no trouble at all. Everything was fine, and the cooler showed up in our room a little while after we boarded.
Ruth