I'm arranging a surprise for DH for father's day. We're taking him out for lunch at a local pub. I want to invite MIL and FIL to join us and the children to celebrate. Is this ok for me to do? Or should DH be the one to invite FIL out for father's day? However it's a surprise for DH so it's a difficult situation. I'm just worried that DH probably has no intention of arranging to see FIL on father's day so he might be a bit put out that I invited him....