All of those issues should be no problem...

The only things you have to worry about are:

1. Taking off a tight helmet. Just learn to move it slowly and consciously so you don't lift up an edge and peal it off. A strong bond will fix that problem.

2. The beer may leave quite a smell which may require some heavy shampooing, especially if the smell gets on the glue. If that happens, just remove, clean, and apply.