I certainly do have a choice. I'm undecided, as those verses could apply to either the 70AD era event, or to the Second Coming.
How do you have a choice exactly? If you see everything up to the end of verse 28 as referring to things related to 70 AD, then you should see that what is described in verse 29 immediately follows what was described just before that. What do you think are "those days" that Jesus referred to in verse 29?
Matthew 24:29 “
Immediately after the distress of those days “‘the sun will be darkened, and the moon will not give its light; the stars will fall from the sky, and the heavenly bodies will be shaken.’ 30 “
Then will appear the sign of the Son of Man in heaven. And then all the peoples of the earth will mourn when they see the Son of Man coming on the clouds of heaven, with power and great glory. 31 And he will send his angels with a loud trumpet call, and they will gather his elect from the four winds, from one end of the heavens to the other.
Whatever "those days" are referring to in verse 29, which your interpretation of everything up to verse 28 would suggest that you believe they are referring to the days around 70 AD, they are immediately followed by the second coming of Christ and gathering of the elect. Do you believe Christ came and the elect were gathered in 70 AD? I don't see any way that Matthew 24:29-31 could possibly refer to 70 AD. It's clear to me that His coming and His elect being gathered is no different than what Paul wrote about in 1 Thessalonians 4:14-17.
If you accept verse 34 as written, they apply to 70AD.
What does it mean to accept verse 34 as written? Does the word "genea", translated as "generation" in verse 34 have only one definition as preterists seem to think?
However, I haven't cast my lot with that interpretation.
Then it seems that you're undecided about how it is written, so why be so sure about how it should be accepted if it is accepted "as written"?
How do you interpret them?
I interpret Matthew 24:29-31 to be talking about Jesus's second coming in the future at the end of the age at which point the elect will be gathered to Him "in the air" (cross reference with 1 Thess 4:14-17). I see the tribulation referenced there as not the one that occurred in 70 AD which was more about physical tribulation, but rather about what is described in verses 23-26 where Jesus talked about a level of deception that could "deceive, if possible, even the elect". I believe He was referring to the same time that Paul wrote about in 2 Thess 2:1-12 where there would be an increase in the numbers of people falling away from the faith and an increase in wickedness and a higher level of deception than before. I relate those passages to Satan's little season that occurs before Christ returns.