Diamond here, and I can count on one hand when a property just even mentions your status.
As for the "extras" I get points, I've had to follow up with Corporate a few times to get them posted to the account, I would wait a few weeks or as Terms say 20 days because their answer always is wait a few weeks before they do anything.
Now with Covid and less traveling I've been able to get an elite member reserved parking spot but I usually return too late to get a spot anywhere close let alone reserved one for elites.
As to room upgrades, saw it once, oh one property had electronic signs that thanked every Elite Member by first name, does that count?
Other than the properties are where I need them to be and their 8k point promotions they run is one of the best free point deal, I stay with them for that and not my elite status. Heck with the lowered requirements this year I will keep my status with one more stay and I'm not really traveling since March.