no 90 day the OA visa is a one year multi entry visa if you exit and re enter at the end of the first year you’ll be stamped in for another year or for as long as your insurance is valid it also requires a police check and a medical certificate
Why would you leave and come back on the same day ??Dont make sense if your just trying to re set your 90 days just pay the fine much cheaper than bouncing you’ll need a visa to enter Laos