This bulb will stay lit and will not blink intermittently
There is a search by store on the item's page. It can search all area store by entering your zip code
No, it cannot be dimmed.
Call your store and speak to someone
They come in 4W or 7W. Depends on how bright you want the light. Night light, I use the 4W, chandelier, I use the 7W. Also depends on how many lights are on the fixture. More lights, equals more heat put out.
Either would work. The original packaging on the night lights I have recommend a 4 watt and a max of 7 watts. I don't see where yours would be any different.
It depends on the light.
2 1/16" tall
Each pack of 4. I've never found them for sale separately.