using a shortcode in a hyperlink

Don’t use double quotes (“) inside the shortcode, since you are using double quotes to specify the href attribute. The browser thinks your href text ends at position=.

Use single quotes instead: href="https://wordpress.stackexchange.com/reservation/?unitrate=[print_csv position="5']&...

I agree with the comments that there is a better way to do this, but I provide a potential answer anyway so you can avoid this in the future.