Trying to get it ready

My brother jack is having a birthday party in 2 days and I want to get the layout looking its best. My brother is turning 6 and of course they would probably like it because they are younger. The room is a big mess there are buildings and some old track all over the place. There is also a problem with my track. Some parts of it cause the train to stop. The track might just be dirty. Other reason can be that the track in not connected together in some spots. Also some of the accessories are not put op yet.