My wife and I will be celebrating our 25th wedding anniversary this coming year. We are regular attendees of an Extraordinary Form Mass at a local oratory dedicated to the same. We are planning some sort of celebration for the occasion, but would like to start of with an appropriate Mass. Are you familiar with any options for an Extraordinary Form Mass, preferably a High Mass, for the celebration of a wedding anniversary?
If the calendar permits, for your 25th and your 50th there can be a Votive Mass of the Trinity or the Blessed Virgin Mary with additional prayers “Pro gratiarum actione“.
It can be Low Mass, Sung Mass, or Solemn Mass.
After Mass there can be a blessing, found in the Rituale Romanum.
There are rubrics for this in the Roman Missal in the section on Votive Masses. Ask your local priest about this.