If you open multiple tabs make sure you are using a private/incognito window. That gives each queue a different id/place in line. It’s what I do for moonlight magic registration etc.
i have 2 laptops, and one iphone..three devices as well. but keeping one window per device.
yesterday for d23...even though it was random. the device i was in first got the shortest wait adn the one i had in the last..had the longest wait.. so maybe not really random. one person said they logged into d23 at 6am and got into 1pm right away. so maybe it's not really random. they just tell us that.