Potential battery/electrical issue?
As others have said starting the car a couple of times while you had the doors open for such a long time probably ran the battery down faster. Even though the interior lights turn off after 15 minutes it only takes a momentary closing of the door to turn them on for another 15 minutes. Another thing that can cause an issue when you are cleaning the car is bumping the map light switch and turning the mirror lights on. It is easy to do and in the daylight usually aren't noticed.
Bill
Its an AcDelco but not the original, and actually i did in the past few days what you suggested and i havent had an issue so far except being worried about my car not starting for work

But as you also said i'd rather not fork out a 100+ dollars needlessly for a battery that is still doing its job.




