Ah ok. You need to take a view on what kids will like best - there is the main Disney park or the studios.
Main park is the Disney characters (mickey, princesses, Peter Pan, pirates, eye) . We almost always go just here as loads to do and IMO best rides.
If you had to do one park this would be it. You may want to buy fast pass which allows access on busier rides but that is mainly for bigger roller coasters which may not be good for 9/10. The only mainstream ride that this includes as I remember is Peter Pan flight if kids like that.
Food is awful and expensive so big breakfast and maybe picnic outside (you aren't allowed in park tho I do see people sneaking stuff on benches - just dont make it too obvious if bring it in as they bag search. If you can minimise bags on day you will get thru security quicker).
Studio is the Pixar stuff and is more show/film based. There is a stunt show and a car show. Might be ok fit kids that age if into stuff like that but it is I think more show based so need to look at website for show times and plan your day.
I would personally go for one park Disney if you have a day but that is only of neither kid big Pixar fan.
Staying nearby ok as miles better than expensive theme hotels unless you want to conceive like Copt says little Copt was when they did Disney.