I am the one in the blue sweater lighting the candles. A woman helps with the hand washing three times, which we cut down to one for time. It lasted three hours. The grapes are extras and symbolic of Christ and the Eucharist, as we are all Christians. Seminarians learn about the Holy Mass by such a dinner. Some of the prayers are used in the Mass.
The plate with the "stuff" on it is the main Seder Plate. Each item is symbolic.
The lamb shank (zeroah) is on a separate plate for space. The matzoes are the unleavened bread. The symbolic food also includes the bitter herbs (maror); the mortar for the bricks to build the pyramids of slavery (charoset); the vegie (karpas) to dip in the salt water, the bitter waters of slavery; the boiled egg, both a symbol of mourning for the Jews, and new life for the Christians (beitzah). The white splodge on the plate is horseradish, another variation of the bitterness of the slavery in Egypt, and it goes nicely with the roasted lamb.
We had it earlier this last month before Easter. It was attended by two seminarians, a married couple and baby and a single gentleman, plus a priest.
I have done so many of these I have lost count, maybe 27. This haggadah includes praising Christ the Messiah and Saviour at the end. We also sang many songs together.