Tags as a dropdown with set tags

Question

Sorry if this is a silly question but is it possible to have a taglist as a dropdown?

I have a page where users can post theyre own content, and I would like them to be able to choose certain tags as a dropdown, is this possible?

Heres the page so you can see http://wordpress.art-williams.com/add-destination

I appreciate any help what so ever, anything is a huge help!

Thanks