My grandfather really wants me to invite his brother and sister (plus their spouses, obviously). i am okay with inviting his brother, but i do not like his sister at all (also i have not seen her that often in my life). if we were having a 200 person wedding i think it would be appropriate to invite her, but we are trying to keep the wedding list to under 50 people. if i invite my grandfathers brtoher then i have to invite the sister as well, and then it snowballs into my FI mother wanting to invite her mothers sister and cousins, etc.
should i risk offending my grandfather and put my foot down or suck it up? and also, if i invite my grandfathers brother and sister do i have to say yes to all these distant relatives from the FI side?