Do we still participate in the ritual of the Lord's supper after our resurrection?
I don't think so, 1 Cor 11:
25In the same way also he took the cup, after supper, saying, “This cup is the new covenant in my blood. Do this, as often as you drink it, in remembrance of me.”
After our resurrection, we can see God face to face (1 Corinthians 13:12).
26For as often as you eat this bread and drink the cup, you proclaim the Lord’s death until he comes.
The goal seems to be until he comes.
27Whoever, therefore, eats the bread or drinks the cup of the Lord in an unworthy manner will be guilty concerning the body and blood of the Lord.
After our resurrection, we will not have a guilty conscience.
28Let a person examine himself, then, and so eat of the bread and drink of the cup. 29For anyone who eats and drinks without discerning the body eats and drinks judgment on himself.
Paul wrote this passage assuming that the ritual took place before Jesus' second coming.
Now, earlier in the actual Last Supper, Mat 26:
27 [Jesus] took a cup, and when he had given thanks he gave it to them, saying, “Drink of it, all of you, 28for this is my blood of the covenant, which is poured out for many for the forgiveness of sins. 29I tell you I will not drink again of this fruit of the vine until that day when I drink it new with you in my Father’s kingdom.”
Was Jesus talking about the Lord's supper after his second coming?
Jesus spoke of drinking the fruit of the vine and not necessarily the cup of the Lord's supper after his second coming. I think Jesus alluded to the marriage supper of the Lamb (Revelation 19:7).