BERLIN, Aug 9 (Reuters) - European travel and tourism group TUI Group said summer bookings remained ahead of last in decal - http://ilookads.com/UserProfile/tabid/43/UserID/2957057/Default.aspx year, despite a European heatwave that has kept people at home in decal - http://text.hlt.nectec.or.th/smwiki/index.php/User:KandacePettiford and pushed rival Thomas Cook to trim its profit expectations.<br> <br> <br> <br> TUI on Thursday stuck to its guidance for underlying earnings to rise at least 10 percent at constant currency this year.<br> <br>