I don't think that is actually required. I would gather it has to paired with a WDW hotel. With WDW prices as they are this year, pairing VIP with Pop almost makes sense if you plan to visit WDW with a group of 10 people...
Suppose you normally stay at CR, get park hoppers, G+ and maybe 1 ILL/per person for your group of 10.
For 5 nights in 2022 (during value pricing season) w/tax a water view tower room, 2 rooms (4 adults, 6kids in 2 rooms).
The hotel packages = $7971+ $7971+ $750 (ILL's at $15 for 10pple for 5 days) = $16,692
Change to Pop stndrd view = $3572 (room 1:2ad, 2kids), 2980, 2980 = $9532
So that's $7,205 you could put towards VIP. If the VIP rate is $450/hr for 7 hours = $3150 (Tip of 18% = $567 ) = $3720
So swapping to Pop = ALMOST enough savings to cover 2 days of VIP = approx $7440. ($280 more)
Since the VIP picks you up at your hotel, there's no waiting on a bus/parking. There's less of a benefit to staying within walking distance of MK.
And the above is if the family of 10 crammed into 2 rooms at CR. If the group of 10 needed 3 rooms at CR, swapping to Pop would = a VIP budget of $11,800. That is enough to pay for 3 days of VIP. ($6630 +$6630 +7300 + 750ILL's = 21310 -9532 = 11778. 3 days of VIP @ 3720 = 11,160 and $618 over)
Though really 3 rooms at Pop = an extra bathroom, so maybe a better option for a group of 10.