Traveling Abroad/Passport Plan

I purchased the 30 day passport plan for a trip to Ireland in a few days.  It is very confusing regarding what is included and what I need to do with my phone prior to travel.  I read through some previous questions from people that explained that sending and receiving texts are included in it even though it specifies only sending.  Some of the posts also explain that the fee I am paying covers the "roaming".  What do I need to do to my phone prior to arriving in Ireland?  Since the fee covers roaming do I not need to turn anything off or do I need to turn off the data?  I downloaded the passport app that will tell me when I am in hot spots for the Wifi but I want to make sure I do not incur any additional fees.  I am aware of the data amount allotted and the $1 per minute for phone calls.  I am planning to text, and email at those wifi hot spots.