I would leave it on till Tuesday. He's bound to lick at it as soon as it comes off because he's not been able to get to it. Maybe after his check up you could leave it off whilst you're with him and distract him from licking but still use it when he's left alone, just until he stops the licking.
They're awful aren't they! One of ours felt so deeply shamed by the cone that he wouldn't even eat liver treats. When he realised it wasn't so bad, he crashed and crashed around the house. The cone was no boundary to his pleasure!
Yes, that's exactly right. We've come up with some new games but they're wearing a bit thin now. He loves chasing a ball on walks (no surprise ) but the vision restriction makes it a sad sight! He really gets frustrated that he can't co ordinate his paws and mouth, also.