No, you need to make a new address report if you spend 24 hours in any other place.
But all immigration offices have different rules about if you have to report your address again immediately, or if it can wait until you need to do something at immigration, so check what people in your local city groups say.
Leaving and entering the country is not an extension.
Extensions are done in country, at immigration offices.
You get a 180 stamp every time you enter Thailand with a DTV. Just fly to Kuala Lumpur or another nearby city and spend the weekend there, instead of sitting in a van all day to go to a border and back.
As long as you don't tell immigration, they won't know. And as of now, they don't check any details when entering the country, so just don't do extensions.