I've setup some open 24/7 WRS test servers at Victoria, Holjes, Knoxville and Nordschleife.
The duration of the practice session is 120 minutes for testing and hotlaps. If you want to shorten this sesssion, simply use !poll start qualify in chat window.
The servers auto restart every morning at 6:30 am CEST to prevent some known problems with the actual netcode. They also auto restart in case of a server crash.
Have fun and don't forget, it's forbidden to beat my hotlaps ;)