Or just not sit there for hours, spamming the placard?

I get it. You really want a house. But there are much better ways to house-hunt. There are plenty of communities out there with the sole intent to minimize how many hours you're there, clicking on a placard like a zombie. Some even go the extra mile and you can be pinged (on discord, that is) when a house on your server goes up for sale, so you can pick-and-choose which ones to go pay attention to with the highest chance of getting a house being in the Goblet. (Assumedly, at least.)

Personally, getting a house isn't worth any stress or pain (physical or otherwise) you may put yourself through by depriving yourself of basic needs.

Not saying you do, but I know a few people that have gone the entire day (for them it was 30 or so hours of camping) barely eating or drinking. Because of the firm belief that when they leave, it sells.