You can use all of the on the NOW TV Box except for those which require an active NOW TV pass (the NOW TV app and Sky Sports News HQ).
You'll still need a complete NOW TV account to use the box, including payment details, but no payments will be taken unless you decide to purchase a pass.
The Movies Month Pass is currently £9.99 a month, and NOW TV is currently a UK only service, so it's not available in Ireland.
@Jennifer3 you don't need a subscription, however they require a card on file for an active account, and an active account to use the box. I'd suggest enabling the payment pin.
@Anonymous User are you in the Republic or the North. I know some in North say they are in Ireland due to their heritage. Given fact you mentioned a box I believe you may be. If so that counts as UK and you will get the service.