I think both of those matches will definitely be happening fizzy because they're on the Stadium court which has a roof. I believe all the other scheduled matches have been postponed until tomorrow. It's pretty tough for the players who will have to play their delayed R32 match tomorrow and then the next day the winner will face Jannik/Carlos/Daniil who will have had two days off.
I saw part of Jannik and Carlos' matches yesterday. I was very impressed by Wu, who I had not seen before. The commentators were saying he was a top junior but has had a lot of injuries since. Carlos really had to bring out his A game to beat him. Etcheverry played really well against Jannik too, although faded mid-way through the second set.