Ben Affleck & Jennifer Garner -- Together in Florida For Ben's BDay (PHOTO)

Ben Affleck and Jennifer Garner have proven once again their kids remain priority through their divorce ... spending Ben's birthday at Universal Studios.

The two were spotted with their three children at the Florida theme park Saturday ... Ben's 43rd birthday. The location shouldn't be surprising as the two have seemingly done everything possible to keep their kids happy since announcing their divorce in June.