Yeah I know basic enough Spanish to know when somebody is like "hey do you want a drink" or "please move" or "good evening" but outside that I'm totally lost. Honestly it's fine, I've done much crazier traveling with much less language skills so I've learned to be able to express myself with hand motions and Google Translate a lot. A lot of younger folk also speak very good English, so it's not as difficult as you imagine. More than once I've had a random kid help me with what I was trying to convey because they speak English (and people are helpful here!). You should be totally fine, definitely do it!!!