Of course the WTS provides double talk about "acceptable" pagan practices (Awake 1/8/2000 p 27):
When a Christian must decide whether or not to follow a certain custom, his main concern should be, What is God’s viewpoint as expressed in the Bible? Likewise, certain customs that are common today are clearly not in harmony with Bible principles. Among these are non-Biblical traditions connected with religious holidays such as Christmas and Easter or with superstitious practices related to spiritism.
But what about customs that may once have been linked to questionable practices but that today are primarily viewed as social etiquette? For example, many popular wedding customs—including the exchanging of rings and the eating of cake—may have pagan origins. Does this mean that Christians are forbidden to observe such customs? Are Christians required to scrutinize meticulously each custom of the community to see whether somewhere or at some time it had negative connotations?
Paul points out that “where the spirit of Jehovah is, there is freedom.” (2 Corinthians 3:17; James 1:25) God wants us to use this freedom, not as an inducement for selfish cravings, but to train our perceptive powers to distinguish right from wrong. (Galatians 5:13; Hebrews 5:14; 1 Peter 2:16) Hence, in a matter where there is no clear violation of Bible principles, Jehovah’s Witnesses do not create a hard-and-fast rule. Instead, each Christian must weigh the circumstances at hand and make a personal decision.