Hello, I would like to purchase tickets for January for the routes: Guangzhou-Beijing, then Beijing-Guilin, then Guillin-Guangzhou. We are a couple and we would like soft sleepers.

How long in advance we need to book through you? Do you guarantee the spaces?
Can we purchase the 3 tickets together, pay for them together and then receive all of them at our hotel in Guangzhou at the beginning of our trip to save trouble?
Thanks