No, the wine and the bread are consecrated in separate vessels. In the past, Catholics took Communion under only one “species” - that is, form - that of bread. After VatII, it became more common to offer the chalice as well.
Protestants don’t believe that any real change occurs in the bread and wine, and regard the whole event as symbolic.
I was once in a Protestant church, many, many years ago, when I was a child, and I saw the little tiny cups of grape juice and the racks that were installed on the backs of the pews to hold them - and I was really dumbfounded!
On the other hand, Orthodox and Byzantine Rite Catholics give Communion under two species, that is, both the bread and the wine, mixing them together and using a little spoon to give Communion to the faithful.
So there are many different ways that this can be done. But the important thing is what you and your church believe happens at the consecration of the bread and wine. Is it symbol, or is it a transformation?
Bread, wine AND Christ's body & blood. All are present and received.
I've never seen glass holders on the back of pews. The little glasses come in trays & you pick up a glass as you approach the alter. After you're done with it you put it back in the tray before you go back to your seat.
I think they make juice available to anyone who must refrain from alcohol, but it is an exception & everyone else gets about a thimbleful of wine.