I will go first. I vote for June 11 - 12.
The 11 and 12 are good for us, too.
Make that two.
Only weekend out of the bunch that isn't somebody's birthday.
...at least yet. Don't recall any of the grandkids/their significant others looking like they had a surprise for us in that time frame, but with this prolific bunch there's no way at all to be certain.
(Celebrating these great-grands is the only thing keeping me sane with all of the COVID/Afghan/VoteFraud going on.)