Lessons I've learned today:
1. Painters tape can remove not only paint, but the top layer of the wallboard in an RV.
2. Using primer does not guarantee that paint will stick to whatever the sides of these cabinets are made of. Sometimes not even the primer will stick. And yes, I did sand and degrease.
3. Before starting a job like this, find all the spaces around a cabinet where a normal paintbrush just won't fit. Like between the toilet and the vanity cabinet. Do what you can to increase your space before you start painting and make a great big mess. (I should have painted the cabinet while the toilet was out for the floor installation. I'm pretty sure my RV guy would have worked out some arrangement with me. He's storing my couches for me now.)
4. Remember that in very small spaces your wall color will reflect onto any surface you've painted white. That means all the white trim looks like it's the same color as the wall.
5. Breathe. When all you want to do drive the stinking thing off a cliff, walk away and breathe. It will all be better in a few hours, and you can start again.
6. It's not about perfect; it's about good enough. The process is as important as the outcome.
Nikki