Raptors are heading down to FL to a location not yet determined (not WDW) prior to reporting to WDW. The only other team this affects is the Nets and, given the level of testing they will undergo and the "bubble" essentially acting as a quarantine, FL, I would imagine, would waive any quarantine requirements.
I speculate they will create separate fitness areas for them at the convention centers next to their resorts. That's only a guess.
I don't understand what rules you are referring to. All of the experiences (fishing, golf, dining, backstage, etc.) that are being discussed are from WDW sources - meaning WDW is gladly and willingly providing this entertainment to NBA personnel. Nowhere is it stated that players are making these demands on WDW.