3DisneyBuggs said:
I changed our travek plans so we will be arriving Friday night and stay offsite. This gives us all day Saturday to do a park. I made dinner plans in the MK but will it be too crowded during the day?
I assume from your question that
A) you mean THIS COMING Saturday (if not, you need to be more specific)
B) you DO have HOPPERS or APs.
Regardless, ALL parks will be busy in the mid-day to afternoon hours.
Go early... be at the gate 30 minutes before opening to any park that is not having AM EMH (because, of course, you can't participate in EMH).
That way, you can ride many attractions in the early morning before the park fills, then you can hop (if you need to) or take a break... then return to MK for dinner.
I have gone to MK MANY times on Saturday because they usually offer Spectromagic (sometimes TWICE) and generally close at a later hour that night.
And yes, its BUSY, but WDW is always busy in the Summertime.