Acts 15:29 That ye abstain from meats offered to idols, and from blood, and from things strangled, and from fornication: from which if ye keep yourselves, ye shall do well. Fare ye well.
I don't see any exceptions in there. Did they forget?
15:1–35] The Jerusalem “Council” marks the official rejection of the rigid view that Gentile converts were obliged to observe the Mosaic law completely. From here to the end of Acts, Paul and the Gentile mission become the focus of Luke’s writing.
To use the language of metaphysics, the “substance” is the Body, Blood, Soul and Divinity of Jesus Christ, but the “accidents” are of wine. You need to believe in the miracle that Jesus left us with His Body and Blood for our salvation.
There are numerous letters from early Christians that recognize and document this belief in the real presence of Jesus.
Justin Martyr (100 - 165 AD) wrote a number of apologetic works. His “First Apology” was addressed to the Roman Emperor Antoninus Pius as an explanation of Christian practices. Chapter 66, in particular, discusses the practice of the Eucharist and clearly lays out the early Church teaching that it is the Body and Blood of Christ.
“And this food is called among us [the Eucharist]... so likewise have we been taught that the food which is blessed by the prayer of His word, and from which our blood and flesh by transmutation are nourished, is the flesh and blood of that Jesus who was made flesh...”
Some who did not fully understand the Real Presence have prayed to Jesus and asked Him to explain it so they would understand.