Agree, not sure it is worth it at that time of the day, the rain vortex only operates from 11am, and the paid lounge in Jewel itself is, by all accounts, not worth it.I'm not sure . While Jewel is open 24hrs, Most stores only open from 10am. Certainly there is time but the exit from and reentry to airside will reduce the value of the paid lounge entry. Don't forget that security clearance is at the gate
On the security at the gate thing, that is the one thing that makes short landside visits entirely possible, as you don't have the uncertainty of a central security checkpoint. Anyone who already has a BP and who doesn't have mobility issues should still easily be able to make their flights going airside 30 mins before departure (or even 25 mins before if departing a gate close by to immigration.