Printing the Board Pack with a mixture of landscape and portrait orientations - BoardPro will handle this with no problem, but we do recommend the following for the best results.
Download the Board Pack rather than using the print in the browser:
Via the Board Pack menu
Or via the Preview
Second, we recommend opening with Adobe Acrobat Reader (https://get.adobe.com/reader/) for more print control options.
Finally, when printing:
Choose Actual Size in the print options
Select Auto on the orientation setting
If you don't see those options when printing, please make sure you have the latest version of Adobe Reader. If they are still not there, it could be a restriction on your printer.