Engine replacement

[missmarta]

Hi!
I need bit of advice.
Few weeks back had recall for wet belt replacement, vauxhall done it, but on a first motorway journey engine died, they offer to replace it (engine block).
My question is, what can I expect now? I am going to pick it up on Saturday, what questions should I ask?
I have read there might be another issues with other parts in the car which could be destroyed (pump, spark plugs etc)
I will ask for warranty but what else?
I just want to prepare myself for this conversation.

Thank you for all advices!
Marta