I started by checking all, but rapidly tailed off to doing spot-checks, maybe one in ten, when I found they were all OK - though I did recently decline one (not from your bot) that wasn't. I'm glad to learn of the 30-day delay, because I have not been sure what to say when the occasional user rushes to WP:REFUND in a panic before his page has actually been deleted: now I will say "it will not be deleted if you edit it now to meet the reasons for declining and resubmit".