mrrjm wrote:What I might do if I had to charge and there was not other option is try to bypass the GFCI. Of course if the panel breaker is GFCI then that won't work
What sort of hotel are you going to? I can't imagine most hotels would sanction you removing the faceplates from their outdoor outlets to defeat their safety protections. Also, what makes you think there will be multiple outdoor outlets within reach on different circuits? I'd think it fairly likely that many or all of the outdoor outlets would be on the same circuit anyway, in which case you're not going to be upping the power you can draw no matter what you can do.
Anyway, if you're driving a Leaf the battery's so small you're probably fine just charging on 120v anyway, so why go to all this trouble? And have you ruled out finding any public charging stations nearby on plugshare if you absolutely need to charge faster? Most hotels have shuttles available that can drop you off and pick you up from somewhere nearby with a charging station.