can be done from 10weeks of age, sooner the better

please dont worry, how big is your carrier? get a flank spay done if you can, quicker recovery and less impact on the body, smaller incision to!

personally my kittens when they are done come home in the same carrier, but they are obviously smaller than your lot will be and I use a dog carrier, so its up to you but Im not sure id seperate them, or take 2 and ask the vet how they hav been, may stress them not being with eachother as they are siblings

good luck and dont worry best thing for them they will be fine!

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My two have both gone through a growth spurt recently so I'm thinking that we'll be needing a second one before the boys go in.

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notsure