You won't get the late hours offers to deluxe guests. You will get the 30-minutes early*
You won't get free parking at the theme parks for your car. You will have to pay a parking fee if staying at a Disney resort.
There is transportation from the resorts to the parks, but it likely isn't as robust as from a Disney resort.
You can book dining reservations a bit earlier by being a resort guest.
You can book an individual
lightning lane attraction at 7 a.m. instead of when the park opens. These are the al-a-carte rides you buy, not the
Genie+ attractions.
No one gets free transportation from the airport to Disney. That service ended.
If you buy Genie+, everyone, no matter where they stay, can start booking them at 7 a.m.
Where you should pick to stay really comes down to your budget and habits. If your family never gets up early, never eats at hard-to-get sit-down restaurants or doesn't plan in advance, many of the benefits Disney offers won't matter much. Not having a car is a limiting factor for you, as that opens a world of possibilities.
*Fixed from earlier