Just go to a temple, and ask to talk with the abbot. With 33 years of marriage, I'm sure he would be most willing to talk with you, and give you a blessing. It's not really an organized thing with you paying so much money to be blessed. Showing your respect, and interest is usually enough, but if you want to donate there is usually a box somewhere. There's nothing wrong with making merit.
Have fun.
koolbreez
Koolimaging