We've decided that, due to budgetary constraints, we will only be inviting the children of our siblings (between the 2 of us we have 9 siblings and currently 12 nieces and nephews all ranging in age between 1 - 19 years old). We are giving all guests a plus one (or inviting their spouse/significant other by name).
What is the most polite way to phrase this on our wedding website? We do have several guests that have infants or toddlers and our venue does not charge for ages 4 and under so I did plan to put a line in stating, "Exceptions will be made for nursing parents with infants or toddlers."