I left my Ecovacs Deebot T50 Max Pro Omni alone for three days...
For three days I let the robot do its cleaning routine, and didn't check anything on it. It ran 3 times a day in different parts of the house, and the only thing I did was empty the dirty water and fill the clean water tank. It ran smoothly and did its thing for that time, with absolutely no maintenance needed. Then woke up this morning to the cleaning tray malfunction. I simply puled the tray out, washed it down, made sure the bobber had free movement, put it back and emptied the dirty water tank, and that was it. It was a solid test to see who far you can push these modern vacuums with no maintenance. Now that I know three days is really the hands off limit, I will make sure every couple days to take the tray out, wash it down and verify everything.