Planet Hollywood parking

I've done a search but I'm seeing conflicting info. I want to see Lioz at Planet Hollywood and I'm trying to figure out parking since it's one property I haven't parked at yet. I see that parking for PH is at the Miracle Mile mall and I've read that it can be a nightmare. I normally get free parking with my Caesar's Rewards card and want to make sure I can use it there.

Does anyone know if I can use my Platinum rewards card to park there for free? (I realize that garage isn't owned by Caesar's)

Or can anyone recommend a better alternative, like parking at a nearby casino and walking?

I've also looked at Google Maps and can't figure out where the MM parking is (where to enter at). Google has other casinos' parking lots clearly marked.

(I also get free parking at MGM properties, so that's always an alternative). Thanks in advance for your help!