Welcome to Goy Pansypots. I have a ceanothus in partial shade. It is fine. Sometimes the top gets burned by the wind but apart from that I have had no problems with it.

Depends on what 'part of the day' means. If its just 2 hours of sunlight first thing in the morning, it won't be enough. If its half a day's worth, should be fine. It won't necessarily kill the plant without enough sun, but it will mean it gropes towards a brighter spot, producing an ugly misshapen form of growth with reduced flowering.