John Deere as with most manufacturers has chased most small independent dealers out of business. The standard answer was it cost too much to support them. They have encouraged these huge multi store dealers. My son works for one of those multi store dealers and tells me of how the big boss sets the policies and usually don't care if the customer get taken care of. Besides JD is the elephant in the pool, he thinks the pools is his and doesn't care you might want to swim too.
It used to be with independent dealers there were a few close enough you could go between them and dicker a lower price, but with the multi store dealers or big box stores it is take it or leave it.
The dealer I worked at was required by the manufacturers to uncrate, setup, and test the unit before it was picked up or delivered.
Most big box stores either refer you to a local dealer or they "collect" units in need of repair for a few weeks until they have enough to send to a dealer. The dealer may be busy before he can look at them, then until parts are ordered and come in, then the tractor is repaired can be weeks or even months. Yes I worked at a dealer (not JD) where we had a contract to repair big box store sold units.
If you want a dealer that offers you personal service and good service seek out a local independent dealer. They will be happy to serve you and give you personal advise on the best mower, tractor, and attachment for your needs. That said it may not be JD, or other "main line" consolidated dealer.