Not hard to do at all. They pack up the Blessed Sacrament and all their gear into a station wagon. It's as traditional as can be. The Big Ecclesia visits the Family Ecclesiola.
Christ come to our homes and be adored forever!
We did this 40, 50, 60 years ago in Erie, PA on the Feast of Corpus Christi, on foot from home to home, from front-porch altar to sidewalk-altar in the Polish neighborhood.