So FI and I were chatting and I told him that I've been thinking more and more about not having my nieces in our wedding as flower girls. So they would just be invited as guests and that's it. He agreed that it really isn't necessary and that if we do include them they would both have to be designated as the same thing or else there would be fighting (one will be 5, the other almost 9 at the time we get married). The other reasoning for not including would be that my brother and SIL aren't made of money, and while we wouldn't expect them to spend a ton on the dresses for the girls - there was a bit of a shit fit thrown this year for Christmas as we tried to organize a $50 cap secret santa among the adults as that was apparently something they couldn't afford.
The issue with doing this is that we can see some members of my side of the family getting upset over not including the girls. So I guess my question is do we include the girls (well ask if they wish to be included when it's closer to the date - we are a year and half out) and risk issues that come with trying to organize, set up appointments, financial issues etc, or do we not include them and risk even more relationship issues with my family?