Wet diapers feel very good and I hate changing a wet diaper and if I don't have to be anywhere I will put on a thick adult diaper and wet it all day long and not change unless it gets to the leaking point.
I have and do sometimes wear the same wet diaper all day long and even overnight and it's been okay and don't get a rash if I wear a wet diaper all day and all night.
But once I tried wearing the same wet diaper for 2 days and 2 nights straight and I would not advise doing that as I got a bad rash from it.
But going all day in the same wet diaper should not give you a rash but you could put some diaper rash cream on your diaper area to help protect it against the wetness.
If the wet diaper is gonna cause a rash though you should start feeling a burning sensation on your balls or other part of your skin and the pee in the diaper should begin to smell like ammonia which means you should change the diaper and take a shower.