I am so sorry your husband's special birthday surprise trip was ruined! I can totally imagine your disappointment, and would love to see what I can do to point you in the right direction. Is there anything in particular you were thinking about?
Have you by any chance been in touch with the hotel you're staying at? They might have some ideas or they might be able to arrange a surprise when you arrive?
I hope some of our other members will have some tips and ideas for you as well, and please don't hesitate to reach out if you have any questions!