Hi Steve,
Yes the sightseeing on day 2 occurs after check in.
Yes you are correct – the carnival is on 9th March – (day 12) – apologies if you have seen this on the website, we are in the process of amending the information so it's correct.
The add on is 3 nights. You'll spend you're time relaxing at the 4-star Rio Othon Palace, which is ideally located on Copacabana Beach, a short distance from the centre of Rio. Hotel facilities include a restaurant, bar and a swimming pool. Bedrooms have private facilities, mini-bar, hairdryer, safe, air-conditioning and a TV.
A local guide is also on hand to show you around Rio, but there won't be a Tour Manager for the add-on.
Many thanks,
Vickie