You can manage with English .. it's good enough for dealings within the confines of tourism infrastructure - certainly in cities - and even when off the main high-tourism trail.
I'm pragmatic about language use in a foreign country -- I don't buy into the contact-with-locals fantasy. Numbers, items on menus, how to ask directions .. words that I need to get things done. A few key functional words go a lot farther than trying to remember phrases or sentences.

