Trip Advisor supports RSS feeds throughout the site.
For example, if you want to subscribe to all the reviews for a certain hotel, then you can find the RSS feed from the review page. For example, if you load this page: http://www.tripadvisor.com/Hotel_Review-g303804-d501371-Reviews-Croatia_Hotel-Cavtat.html
You should see a RSS feed icon on the right side of your address bar (note: this will depend on your browser. If using Chrome you will need to install the Google RSS Subscription Extension)
Clicking on this icon will take you to the URL of the RSS feed, which for this feed is:
You can copy and paste this URL into SocialMiner.
A support article from Trip Advisor discussing RSS is here: http://www.tripadvisor.com/ShowTopic-g1-i12105-k2927626-How_to_get_the_RSS_Feed_Address-TripAdvisor_Support.html