1. Please replace /wp-content/themes/Travelo/inc/functions/shortcode/shortcodes.php file with attachment.

2. Travelo theme is translation ready. You can use language file to change "Tours" to "Activities" using language file.

Please check http://soaptheme.net/document/travelo-wp/#translation

3. You can not add a new tab in search form. Travelo theme has not such feature.

Best Regards,

1. Need to change order of search tabs on main search form (homepage 10) from Hotels, Tours, Cars, Cruise,        Flights to Hotels, Flights, Cars, Tours, Cruise

2. Need to change "Tours" to "Activities"

2. Need to add another search form tab,  "Itineraries"