@JeanPaulSartre Thank you sir.
I haven’t had much of a chance to answer this, but I think you’ll do fine if you have a chance to practice. Depending on what kind of samba drums you’re going to be playing (Surdo or Snare), you’ll definitely want to find some way to practice the rhythms outside of class.
If you go the snare route, I’d recommend you get a little practice pad like this and spend a lot of time outside of the class working on stick control and the rudiments like @squidcake suggested.
If you go the Surdo route (the big drums), I wouldn’t worry about it too much. They’re pretty simple in rhythm (mostly 4/4 beats without triplets or duplets), and a lot easier to pick up. If you do plan on marching with them for prolonged periods of time, though, be warned. Those things are a bitch to carry if you’re small in stature or not all that strong.