Opium:
"And who believe in that which has been revealed to you and that which was revealed before you and they are sure of the hereafter. These are on a right course from their Lord and these it is that shall be successful." - Qur'an 2:4-5.
In short Jews, Muslims and Christians enter heaven on merit, that they are Jews or Christians or Muslims is not a factor and so I doubt they would be slaves.
"Brightspark" it would seem enjoys stirring the pot but no doubt has something important keeping him from remaining to be questioned or challenged. Most convenient, no?
I would expect Paradise to be fair, yes ...