Switching to another theme from gamepress

Hi

for my site http://www.delhi-fun-dos.com i just figured out a way to have reviews as posts on home page and I’m liking it a lot. I started using this instead of creating posts and manually adding ratings and good/bad etc

But I have a concern now. Just in case later someday I want to switch to another theme, none of my reviews will show as posts. I’ll loose all the content. Is there a way out. If in future I want to move to another theme I’d like to have the reviews appear at least as normal posts.

Thanks