Neutered tomorrow

[Nanno]

Pac-Man is losing his jewels tomorrow morning, and because he's almost a year old, I've opted to have him surgically castrated. The vet suggested we could band him, but I think that sounds way too painful and icky at this stage in his life. I do NOT want something that large rotting slowly away in his nether regions, especially with a dog around. Blech! This vet has not had good results with a burdizzo, so surgical sounds like my best option, even if it is more expensive.

Is there anything I need to know? Stuff to watch out for? How sore will he be for the first few days? Any information would be appreciated.