Which hotels? Even the cheapest hotels I've gone to (and I've gone to some really crappy hotels) have free parking for check-in guests. They have to... otherwise, no business. Even those that have you park on the sidestreet strip along Roxas Boulevard.
I once had a brand new test unit parked beside a movie star's sports car when we stayed at a casino on Roxas.

Didn't even need a ticket or validation. Pure pogi points lang. (The car, not me.

)
Shopwise in Festival validates? Really? Which parking area? For Puregold, are you talking Molito? Still, I prefer South Super, because it's less hassle to go to.
Metro is the best, if you can get a spot. No hassle basement parking, it's inside ATC already, and it doesn't cost that much even without validation. But you've got to wake up early in the morning to get a spot there. And they only open at 10. South Supermarket opens at 8.
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McDonald's Alabang, great spot, also, but it fills up right away, and if you're early enough to get a spot there, you're early enough to get a spot at Metro. ATC by the church... too far from the mall. And worse, wrong side. All the places I need to go are on the other side.