My sister drove up last night and brought food and water that we added to what I already had in the room (we're at Pop Century). We spent the day at MK and had little to no lines for anything that we did. Once I read in the forums there was likely to be a 5pm closure we decided to leave around 2:30pm to give us time to get a hot meal at the cafeteria and head back to the rooms. We lucked out - the lines were absolutely insane right after we got there. They'd temporarily run out of the 12.99 lunch bags and were putting out more as we left. They were also still serving their regular dinner options and moving as fast as they could to accommodate the lines.
I will say that I have been surprised as to how Disney has notified guests. We received no letter under our door regarding the hurricane, though we did have a message waiting on the room phone (which I almost didn't notice because we never use it). No email alerts. And both the app and main website still had the "we are operating as normal and monitoring the situation" note up even after the announcement about the park closure at 5pm came up over the loud speaker.
Conversely, when we were in Hawaii during the 2011 tsunami, we were given a notice under the door, had notice from the hotel via email, and staff going door to door first to inform us, and then to eventually evacuate us. I have local family here, and tend to follow weather regardless (being stuck on vacation in both hurricanes and tsunamis previously will do that to you), But I had at least five conversations today with people who either had no idea there was a hurricane coming, period, or had no idea how strong it was...some were still thinking they'd get out tonight or tomorrow for their flights.