Hello - Is one blank page in a passport sufficient for the application (English passport)?

Problem is that this passport contains previous Chinese visas. Or is it better to apply with second passport (Australian) and maybe photocopy the previous ones?

There is no invitation necessary as a tourist? Only flight details and hotel bookings?!

Also - do the passports get sent back by post or do we have to go back to Bern to pick them up? There is no chance of getting a fast tracked ones for English or Australian passport or German passport?
Many thanks in advance for answering my questions!!