$(document).ready(function() { 
  
  $(".hiddenBookId p").each( function () { 
    
    var bookId = $(this).text();
    
    $(this).parent().next().empty();
    $(this).parent().next().html('<a href="http://reservations.tagwhistler.com/express/reservation/results.jsf?locationId=-1&activityNameId='+bookId+'&typeId=-1&startDate=01/01/2000&endDate=01/07/2000&guestCount=2">Book Now</a>');
  
  });
  
});