I think you might want to look at the 2020 K-1 to check for foreign tax withheld. It seems probable to me that if you had tax withheld for 2020, there will probably be some for 2021.
I wrote about this K-3 situation in
PTP 1065 K-3 forms due to be released for many PTP /MLP. Will we be ready
At the time I wrote that, I had not yet learned how to do a search that would have turned up your post. My post is more of a heads up that the thing we have been waiting for is approaching the promised time for K-3s.
I really don't look forward to trying to do the 1116 forms. I hope you fall under the $300/$600 threshold.
I think that the K-3 will not increase your taxes, but the tax credit could lower the taxes. I expect no problem from the IRS not claiming a tax credit that you could have. Whether you would amend to get that credit would depend on how you value your time and effort, I think. So my thought is that I have gone this far. So waiting until September seems worthwhile for me.
