To me, one of the prominent verses to be found in this discussion is
2Pe 1:13 I think it right, as long as I am in this body, to stir you up by way of reminder,
2Pe 1:14 since I know that the putting off of my body will be soon, as our Lord Jesus Christ made clear to me.
I do see room for a metaphorical application associated "seeing" a vision. I'm think about the vision Peter had relative to the Gentles being accepted.
Which brings me to a point I'd like to make relative to the Book of Revelations. I've struggled with the canonical inclusion of Revelations for many many years. I believe it contains truth. However, I'll make an argument that often gets me in trouble with my fellow Christians...
Paul was forbidden to reveal what He saw when he was carried away "in the body or out of the body" in the "third heaven". He used the words "unlawful to speak/utter".
However, you see the opposite this relative to the "John's" vision.
Just mentioning this. Take it for what it is worthy. I don't criticize either side of the canonical acceptance of Revelation.