USA Roaming

Hiya guys l, not grt with any kind of tech so be gentle with me.....anyways l, I'm off to New York soon. Not really planning on using my phone apart from maybe Google maps and of course I want to be able to use the phone in an emergency. Am I right in assuming the plan that I'm on (5gb) will be enough to use Google maps for 10 days or would you advise getting a

You would need to buy this add on for the USA

https://www.lebara.co.uk/en/roaming/...ed-states.html