Quote:from Chapter 3, point 30 -- The Catholic faithful, therefore, while respecting the religious convictions of these separated brethren, must refrain from receiving the communion distributed in their celebrations, so as not to condone an ambiguity about the nature of the Eucharist and, consequently, to fail in their duty to bear clear witness to the truth. This would result in slowing the progress being made towards full visible unity. Similarly, it is unthinkable to substitute for Sunday Mass ecumenical celebrations of the word or services of common prayer with Christians from the aforementioned Ecclesial Communities, or even participation in their own liturgical services. Such celebrations and services, however praiseworthy in certain situations, prepare for the goal of full communion, including Eucharistic communion, but they cannot replace it.
I think this is pretty clear -- Catholic in good standing shouldn't take Eucharist at, say, a Lutheran Church, where they don't believe it is truly the body of Christ.
As for the Catholics who aren't in good standing, which unfortunately include divorced and remarried ones who are otherwise good and exemplary people -- he doesn't mention them, at least that I could see. I assume they are free to take a Eucharist celebration outside a Catholic church, but it won't be a Catholic sacrament.
In order to be a Roman Catholic in good standing you have to sacrifice, sometimes a lot. That's the way of the world. As all trained Catholics know, there are certain life paths, which, if followed, will keep them from full participation in the sacraments. It would be very unusual for someone to take all the sacraments anyway... for example, one is marriage and another is holy orders. (It could happen, but would be very unusual.) Not everybody gets an annointing for the sick, either. Anyone can still go to the mass, the doors aren't barred. But it is not the right church for many people. Nobody said Catholics weren't fussy about their beliefs. They're fussy and they're picky. Lots of things matter.