there is plenty of info on google about how to get the tags. it is right in the codex:
http://codex.wordpress.org/Function_Reference/get_the_tag_list
but you haven't posted much of anything that would help us help you with gallery. did you try the http://upthemes.com/forum/ forums at all? since they are the ones distributing the theme.
assuming that the version available for download is what you are using (which i have no idea if it is b/c i just downloaded it and i don't see Usability and Appreciations in my meta), then my previous suggestion to filter the thematic_postheader_postmeta() does not apply has gallery has remove the default single post and replaced it with its own version.
again on the assumption that your gallery is the same as mine:
go into functions.php and find the add_metadata_to_post function and add a line for your new tags function
// add meta data to the post
function add_metadata_to_post( $content ){
$content .= '<ul class="meta">';
$content .= add_twitter_to_meta();
$content .= add_designer_to_meta();
$content .= add_weburl_to_meta();
$content .= add_tags_to_meta(); //added this
$content .= '</ul>';
return $content;
}
then somewhere in functions.php add
// add the tags to the meta data
function add_tags_to_meta(){
if(get_the_tag_list()) {
return get_the_tag_list('<li class="post-tags">Tags: ',', ','</li>');
}
}
this will produce a tag list.