If oil seed rape honey in any of the frames it has probably already crystallised and will not spin out. Any such frames I give a good misting with water and feed back to the
Bees.
It is unlikely, even at the end of the season that all frames will be totally capped. Uncapped frames can be safely extracted if you hold them flat over the hive and give a good shake. If nothing comes out then the moisture content is likely to be OK for extracting. If drops come out they are not ready. I do the shake test at the apiary then check water content with a refractometer before extracting . Anything less than 19-20 is OK to extract.
I get the supers back on the same day, and if short of drawn comb will make up extra supers alternating the drawn extracted frames with foundation. If a flow is on the foundation is drawn quickly.
Less than 50% of my OSR crop was capped this year, but moisture content still OK to extract