Why not open up another email address, its not difficult to check daily this way if you choose what cruise critic allows then you are in their site.
I thought I had posted an answer but nothing showing. The easy cure is get a google;orange server and set up a new email address they are free and this should get you around your hotmail problem. Checking two emails is nothing nowadays I know some people with 6+ addresses.
Personal details cannot be published on this site so you will have to wait and see who you meet. So you can't get email or full home addresses etc.
Set up an separate email address using yahoo instead, that will get around the problem. www.yahoo.co.uk.
I was on the Grand in June 2005 going around the Greek Islands. Had a great time.
The ship is amazing, the food fantastic and the staff very good,suprised to just read a review now on this site that was not too good about the ship. But as i say we had a brilliant time time. The only caution i would advise is not to order the large beer in Rhodes at it is about 3 pints all in one go served in a massive wellington boot. Mikanos is paradise, very pretty with lovely beaches. Corfu offers some lovely restuarants along a higher area of the town/harbour with lovely views. Can recomend the mousakka, you also get sung to at the same time.
We have always met great people on cruises so i am sure you will too.
Hope you enjoy it as much as we did.