I think adults are not mandatory. I had over 100 guests inclusive of kiddos on my boy's bday last time. It will be a headache to prepare and it will seems like you're distributing wedding flavors that day of adults are inclusive. Need to spend a lot too.
I would usually have gift bags just for the kids. But it's really up to you. If you want to have a party favour, something like a little individually packed cupcake would be lovely.
I prepared for little kids only. :) I guess it depends on what u are comfortable with.
thanks
Party favors are typically just for kids
Usually for kids only...