Whether you have inclusive roaming in the EU is impossible to know without more details.
Are you on PAYG or pay-monthly? If pay-monthly, what specific plan are you on, and when did you take it out?
You can check personalised roaming charges on the online tool - https://ee.co.uk/help/mobile/roaming/roaming-costs or the myEE app.
Remember to ensure the free roaming facility is enabled to allow your phone to have coverage abroad. Pay-monthly should text ROAMING to 150 before leaving the UK.. PAYG needs to use the phone on EE's UK network before travelling.
