Spanish 101 will hardly be worth the effort. You'll be able to say hello, good bye and ask where the bathroom is.
Depends on how much effort you put into it. Sure, out of almost 20 people in my Spanish class only two were able to communicate at all after one semester, but that's because all the rest didn't apply even the minimum effort.
I could only fit one semester of Spanish into my schedule when I was in school. Then several years later, when I moved to an area with significant Latino population, I watched a telenovela to refresh my Spanish. I am able to communicate with patients effectively enough, even over the phone. Nothing too complex, and I know that I butcher grammar and can only speak in present tense - but it is enough to understand the patients' concerns and to explain medications to them.
Of course, Spanish was not the first foreign language I ever learned nor even the second, which helped.
🙂
On the subject, though, rotations may or may not allow room for a regular class. Hours on some rotations can be unpredictable, too.
Advantage of medical Spanish programs is that they are short, usually 6-8 weeks. Though out of my classmates who took that, majority still couldn't say anything in Spanish... with languages, it's all about the effort you put in. Well, 90% at least.