Are they and Jesus the only "intact" persons there right now? Or did Enoch and Elijah go somewhere else to wait?
I do not recall any mention of "another place" other than the physical and the spiritual realm in Scripture. In regard to the spiritual, there are only two places mentioned, that I have read; hell and heaven.
The Garden of Eden had no sin but was physical. Could they be waiting there? Or did they precede Jesus to heaven with their bodies even though Jesus is the first-fruits of the resurrection?
1. The Garden of Eden is no more. Sin destroyed that place as it did the beauty and harmony that existed around the globe, in whatever form it had.
2. Possible, but remember, that Enoch and Elijah were sinners who were no less worthy of damnation. By God's determinate council and foreknowledge (predestination) they no different than any other believer, received saving grace and by the power of the Spirit, repented of their sins and believed in Christ, Who was to come. Though they can be seen as 'types and shadows' in regard to the final coming of Christ when those remaining on the earth will be raised, body and soul, to be with Christ, they do not represent Christ whose death and resurrection was forensic, a substitutionary atonement for the elect.
Related question: If it is appointed to every man to die once.....well....don't they gotta die? Are they the two witnesses to be killed in Revelation? Seems like they gotta die.
"The secret things belong unto the Lord our God: but those things which are revealed belong unto us and to our children for ever, that we may do all the words of this law." (Deut 29:29)