Alaska cruise & don’t need air. Air credit?

[dcsam]

Haven’t cruised with Seabourn before.  But we’re considering an Alaskan cruise with them.  We wouldn’t need air, so does Seabourn give an air credit (similar to Oceania)?  Any other promos or discounts for first timers?  
Thank you!

[skybluewaters]

Air is an add-on and is not included in the base fare on Seabourn.