We will be spending two nights in Copenhagen before leaving on a cruise from the Oceankaj cruise pier on Sunday morning, September 23rd. Is an expensive taxi ride the only practical way of getting to the pier that morning? Thanks in advance
No, you can take the bus or metro.
There is a shuttle bus from Østerport station on cruise days https://productiondotstorage.blob.core.windows.net/dot-imagesanddocuments/buslines/25-0025-220522.pdf
The ticket to Østerport station is valid on the bus too.
Thank you--is the Osterport rail station co-located with the Osterport metro station. We will be riding the metro from Christenshavn that morning.
Yes, they are co-located to facilitate changes.