Sarafina, I am concerned that you are getting a little bit scared about getting a hot hive. This will be your first colony and don't let this kind of stuff give you the willies. Personally, I need to console you a little bit. The place where you are getting your colony from is obviously reputable, otherwise your local beekeeping association would not have recommended you to get them from T Weaver.
I am not saying that there isn't the possibility that the hive may not be hot, that can happen to anyone, but please, don't let it worry you too much. I doubt that the hive will be hot. Just wanting you to not get scared off. It is a frightening thing for a new beekeeper to hear of hot hives, and don't let this govern how you feel about getting your bees. Things will be OK, I have faith in that.
Look at it this way, if the hive is calm that is good, if the hive is hot, (which I don't think so), you will not know the difference anyways, hee, hee, as you have nothing to compare to. Just deal with the bees any which way you can, and things will be well. Get your bees on April 5, you will be happy, any which way. Have a wonderful and beautiful day, Cindi