#1 - Could be borderline personality disorder (BPD) or a mixed state.

#2 - Could also be borderline personality disorder, but some people when drunk flip flop between emotions. In that case, it's not really a "mood disorder" that's causing it. It's simply being drunk.

I don't really believe in ultradian cycling (which is what I think you're getting at with "rapid cycling," as rapid cycling simply means you have 4 or more episodes in one year), but ultradian cycling implies you switch moods very rapidly like you're describing. I think anyone who switches between extreme "moods" that fast is having emotional dysregulation caused by something like BPD, some other personality disorder, ADHD, autism, etc., but not really bipolar. It is technically possible to have ultradian cycling, but that is almost unheard of. It's very rare.

Just my opinion, though. I'm not a doctor.