Surely the companions of Paradise will on that Day be in happy occupations enjoying the blessings (of Paradise that God will grant them abundantly out of His grace, in return for their good deeds)
Surely, the residents of Paradise will be rejoicing Today (in their) favourite pastime pursuits (like spiritual visits, entertainments, sessions of hymns and eulogies)
The people of Paradise, at that time, will be occupied with the joy and amusement of the blessings of Paradise.
Sayyed Abbas Sadr-Ameli
Verily the inhabitants of Paradise that ay are busy in rejoicing,
Al-muntakhab fi tafsir al-Qur'an al-Karim
And this Day shall those destined to the abode in Paradise be preoccupied with the world of supreme blessedness in which they do rejoice beyond a common joy