Hi, I'm new here. I was wondering if it is common practice for a Society of Pius X priests to tell the congregation at a wedding that if they attend a Diocessan (he said Indult) approved Tridentine Mass (which I attend) or a Novus Ordo Mass, they cannot receive the Blessed Sacrament at this wedding....
No, it's not common practice.
At the regular Sunday Masses of the SSPX that I attend, there have been members of the congregation who sometimes attend "approved" Masses, and sometimes even NO Masses, and they're never turned away. There's no announcement.
My dad had an SSPX funeral, which was chock-ful of NO Catholics, most of whom received Communion, and the only announcement was that Communion is distributed on the tongue.
At most, it might be announced that only practising Catholics in a state of grace may receive, but NO and indult Catholics are not excluded from possibly managing to fall into that category!