welcome to BinkyBunny Loisme! 🙂
Many vets just don’t know enough about bunnies to give them proper care, so it takes a little research and time to find the right vet. It’s also a good idea to ask some questions before making an appointment. How many bunnies do they see annually? How many spays / neuters do they do successfully for bunnies yearly? Should you fast a bunny before surgery (this is a trick question, since the answer should be NO)
You might try this list to start finding a good bunny vet.
http://members.shaw.ca/cocoasun/CanadianRabbitVets.htm
It’s perfectly ok to neuter or spay one bunny first and then the other. they all reach sexual maturity at different ages. Generally if one starts to get nippy or very humpity, you know it’s time to get neutered. You can also tell boys are ready if thier “nanas” have dropped. I’ve seen a lot of pairs go from being best friends to getting really aggressive and biting each other when they hit puberty. So, it’s always best to get them neutered as soon as they’re old enough.