For Byzantines, It should be noted that, during presanctified (vespers w/communion) liturgy, yes, it’s just wine*. During Divine Liturgy, the wine is consecrated and is the Precious Blood.
Step forward, tilt your head back, open your mouth wide, do not extend your tongue, don’t say anything, and if your mouth is higher than the top of the chalice, bend your knees a bit, and don’t move! Rev. Fr. (or occasionally, Fr. Deacon, will feed you salvation!
Once you have been communed, you might be permitted to kiss the chalice. In some uses, you may be offered a cup of water or wine, and perhaps a piece of bread, to insure the precious gifts have gone down.
If it looks like a second communion, that’s not; it is the antedorion, the blessed but unconsecrated bread left from the preparation of the gifts.
Note also: The Maronites use unleavened bread, and several other eastern churches permit either! Maronite commnion is in a style that will be familiar to most Latins, tho the rest of the mass may be a bit unfamiliar.
- The wine used is blessed, but not consecrated, while the precious body is placed into it. Some theological points consider the wine to be “contact consecrated” while others don’t; if the precious body had been dyed with the Precious Blood, then the theory of contact consecration holds more weight… but it’s treated the same as if it had been, liturgically, anyway!