The U.S. would have taken the Island and wo-
Oh yea.
No real changes would have occurred. No matter what the carrier were going to have to depart sooner or later. The cruiser action still happens and IJN ships get away in the dark.
The only change might be that the transport force sticks around long enough to complete unloading. Even that is questionable give the disaster at Savo.
It is worth noting that the presence of the carriers didn't prevent the IJN from coming down the Slot on during the day of August 8th.