Re: the exotic dancer description. Who is to say the Amarr think the same body parts are taboo? Perhaps it's the public act of exposing that is sinful, not the part exposed. I think it's the act of revealing flesh, which degrades the dancer and tempts the audience to sin, not the flesh itself that is sinful.
The statues in the Amarr CQ expose a significant amount of the subject. Amarr female clothing options include bare arms which are taboo in some beliefs. I don't have in-game access to confirm right now, but the Noble exchange skirts show a bit of leg as well.
Amarr (especially with the old avatars) have very ornate patterns of decoration. Their clothing options are richly decorated and patterned. Their facial markings and headdress' are ornate. This, and their frequent use of statues as decoration, points to both their vanity, and an appreciation for the human form. If they consider the human form to be divinely created, why wouldn't they celebrate it? Alternatively I could see arguments in favor of more "prudish" covering up in order to preserve the integrity and dignity of human beauty.
Re: drinking.
The Theology Council makes a lot of booze, this to me speaks volumes as to their opinion of it. The Empire makes a lot of grain, some of which likely becomes drink. There was an article on the wiki about a type of grain that the Amarr revere and they forbid the Matari slaves from making moonshine with it. We can see a huge supply of alcohol, presumably there is a matching demand.
The Amarr also frequently make use of drugs as a form of control. These drugs frequently, and in the case of blue paradise, exclusively, have pleasant side effects for the user. This shows to me that the Amarr are very aware of intoxicants and use them as a tool. If they viewed intoxication as sinful, why would they give the most potent intoxicants to the segment of their population which they view as most in need of absolution? Regarding the above mention of forbidden moonshining, if I remember the article correctly, it only became illegal when a slave beat a holder. Again, we have evidence for action being sinful, not a substance or natural property.
Another subject regarding space prudishness. The wiki mentions that the Ni-Kunni used to be polygamist and the Amarr "fixed" that. So we do have evidence that the Amarr view marriage to multiple partners as sinful or at least culturally disruptive (probably both).
There most likely are communities within the Empire with stricter interpretations of what is proper and allowed. However, I think it's much more interesting if there was more to the faction than religious prudes in space.
EDIT: the moonshine mentioned above was Firwa
http://wiki.eveonline.com/en/wiki/Firwa