I am an uncle to 6 nieces and nephews. I live about 1000 miles away from the rest of my family, so I only see them 2-3 times each year. When it comes time to say goodbye, it is common practice for physical affection to be given out. My siblings and parents will hug each other and me. The children are encouraged to give out hugs and kisses to their grandparents, aunts, uncles, and cousins.
I have two particular problems with this. The first is that the children don't seem to always want to give out hugs and kisses (and I think they should be taught bodily autonomy as early as possible). I know about this question (which I happen to have the accepted answer on) which deals with helping children enforce their own boundaries. For this question I want to focus on the other problem, which is that I don't want the kisses.
I am fine with hugging my nieces and nephews if they want to hug me, but I do not want to kiss them or have them kiss me. The reasons for this are that children give very slobbery kisses (which I don't like) and that none of the adults give kisses to each other, so it seems odd to me that they would have their children do so.
The general conversation will be something like this:
Sibling: Do you have hugs and kisses for uncle Rainbacon?
*Child hides face
Sibling: Come on, give your uncle Rainbacon a hug and a kiss and say goodbye
How can I decline the kisses without offending my siblings?