Can I use Vodafone Family and Free Weekends in Republic of Ireland?

Question

I am going to Republic of Ireland tommorrow and I have Vodafone Family and i was wondering if i could still use it to call people in my group if they are in england. and to the ones that are in ireland with me.

Also i was wondering would i be able to use my free weekend calls on vodafone to ring people in england?

Also can my girlfriend ring me with her free weekend calls if i am in ireland and she is in england?

Thanks