Welcome back, Mark.
Mark, it’s best not to repeat your history, but refer to your intro post you made here already: Newly Diagnosed with Vestibular Migraine - some questions. That way you can keep your post more succinct and to the point of your question.
We cannot diagnose here, so cannot overrule doctors. That said, I’ll leave it up to the house who I’m
sure can make some useful comments.
NB “Vestibular Migraine” and “Migraine Associated Vertigo” are diagnoses (based on measurements and symptom descriptions), NOT aetiologies. This can also be said of Menieres. There is much to learn about how these conditions actually work but I sincerely doubt they are as simple as a migraine in any case. I’d also suggest there is probably more variety in aetiology than the simple umbrella terms suggest.
I will just say that Menieres sufferers almost always have low frequency hearing loss as a result and usually don’t have continuous symptoms lasting months or years: they are, initially at least, usually totally steady between attacks. They also seem to have significant hearing disturbance during an attack, usually a roaring tinnitus. If your condition does not follow that pattern, then I’m not sure how someone could make the case that you have Menieres?
Waking up dizzy is very normal with MAV! Usually symptoms decline during the day, and you can feel much better by afternoon.
I do hope things calm down for you by the time of your trip! 