Conservative Jews: Yom Tov Sheni

Hello all,

I have some questions about the observance of Yom Tov Sheni for Conservative Jews. Is it observed with the same restrictions as the first day of Yom Tov or is it merely seen as something cultural but with no halachick weight?

Edit: it is a very theoretical question, but how the movement would deal with life cycle events done by other movements during Yom Tov sheni, for example marriage, conversions, bris, would it be invalid altogether?

Also, if there is any Rabbj that could help me with some questions, I’d be so glad.

Thanks in advance!