My departure check in time was noon on a Friday. I took my test through emed (navica) at 12:30 Wednesday. I am not sure what their hours are but i would assume normal 8-5 business hours.
I recently went solo to Alaska and really enjoyed it. The only awkward time was dining alone in the main dining rooms but I was able to have great conversations with the couples next to me so these times were actually some of the most enjoyable times on the ship. Going solo is King.
I recently bought the BinaxNOW Covid-19 Rx home test with eMed service for a recent Royal Carribean cruise and have an extra one I will not be using. I bought the two-pack for $70 and used one of them for my cruise. Its available for anyone who wants it. I can take bids.