No. You can only have one child.
No. Although in Cute there is a choice of gender (just keep resetting until you get which gender you like).
You choose.
You can not have a child with Kai in Harvest Moon DS. But I'm guessing you're talking about Harvest Moon DS Cute, and yes you can have a child after you marry him.
you need to have a kid
nope.
No
No, you can only have one child, but you do get to pick which gender you want it to be. Also, the maximum age the child will get to is 1 yrs old.
No. Your child will never grow any older than a teenager and he will not ever marry anyone.
LOL - you don't. Once your have a kid, your kid will help out.
There are a couple of events you get with your child. And will attend certain festivals after he/she learns to walk. Other than that your child does not do much.
keep him out late at night
No. You can never ride a horse with someone else.