Hi Tony,
1. As far as I know, the Gibraltar trip is still available as an optional excursion with this holiday. If you want to double-check, you could give our our holiday advisors a ring on 0800 567 7393. If it has been missed from your letter, they will be able to send you the missing information.
2. The Chinese year is a little like the British one, but even colder in winter and hotter in summer. Like the UK, December and January are the coldest months and July and August are the hottest. If you prefer cool weather, you might prefer to go in spring or autumn.
Kind regards,
Olly, your editor