There is generally little reason to visit a dealership except to test drive or to pick up. You can do negotiation over phone/email.
LH score is completely meaningless.
Does the $200 incentive apply to leasing only? Is there a finance incentive?
Download an auto loan amortization calculator and review your cost of financing after 3yrs versus your cost of leasing.
I get $18,050 in payments after 3yrs ($501.39/mo) assuming that your loan is $28,677 ($28,877 selling price with $3114 paid up front for all taxes/fees plus $200 down payment) at 1.9% APR for 60 months. However the principal after 36mos is $11,798. Lease RV is $19,572. $19,572-$11,798 = $7,774 theoretical positive equity. $18,050 - $7,774 = $10,276 cost ($285/mo). Compared to $302/mo lease cost with the same DAS not a big difference, but something. This has to be weighed with the benefits of leasing (known residual risk). I did not include the lease disposition fee which is $350, so I guess one could argue that it’s more like $311/mo to lease vs. $285/mo to finance.
I think with an Accord it is a relatively low risk to compare leasing and buying like this and assuming that the RV is somewhat accurate. There is not much difference in buying vs. leasing in this case since rent charge is low and tax situation is the same since TX charges full tax on selling price up front. If MF was high, you’d see a huge difference in rent charge since it is not compounding like finance charge is (rent charge is always same $/mo whereas finance charge reduces with principal).