A few have, and those dealers earned themselves a "reputation". Some of these have later changed their charging policies to be more helpful.
HOWEVER, most dealers have been very kind and nice about letting LEAFs charge during business hours. A few dealers have even arranged after-hours (24/7) access.
Some people even encourage buying things from those that treat you best.
I suggest calling ahead if at all possible, asking nicely for permission, and using the word "Please".
If you have failed to plan ahead (or at least make prior contingency arrangements), and the charging is really "needed" (not just "wanted"), explaining how you planned poorly, and offering to pay "emergency" rates might also help.
No, it is NOT your RIGHT to get free e-fuel at Nissan Dealers (even if Nissan puts them in Carwings), or ignore planning ahead.
How would you feel if somebody arrived unannounced at your home and wanted you to move your cars so that they could "drink" some of your e-fuel, that they really did not even need?
See SOC/GID-Meter and CAN-Do Info
2011 LEAF, sold in 2015
2010 Prius, 2014 silver Tesla S
Nissan EVSE, mod to 240/120v 16A
Solar PV: 33 x 225W -> 7 kW max AC
To Sell: X-treme 5000Li EV motorcycle