Happy you reached a compromise, at least for this Christmas.
It's a small victory for me
None of us want to create conflict between you as it's wonderful that you both found love, but, marriage is supposed to be an equal partnership.
Your husband wasn't a practicing JW while you were courting as he didn't decide to return to that religion until after you were married. Did he discuss with you before returning, how his decision to return could (will) impact you?
You are the woman he first accepted and fell in love with, celebrations and all. Since Christmas has been a lifelong tradition and remains important for you, and although you haven't changed your religion, beliefs or views of the holiday, it seems you are continually making compromises for the religion he decided to return to.
I didn't say compromise for 'him' or his 'beliefs' since any changes to JW beliefs as dictated by Watchtower, he is expected to immediately change his views to comply with.
As he was well aware and accepted you celebrate various holidays which you would be continuing to celebrate after marriage, what compromise has he really made for you?
Although you had both agreed to individually observe and practice your own beliefs, you now consider an ability to have a Christmas tree in a secondary (hidden) room in your residence, a small victory.
What compromises for the JW religion will you be making next, while considering what little you can do in a hidden manner, without support or the ability to enjoy these occasions with your husband, as a victory?