New moon is a time of transition and the energies can still have a lot of subconscious residues which can veil the full expression of love. Things are not so clear and still emerging. I’d say full moon is a much better time because it signifies the culmination, the fulfillment of the love cycle. Hope this helps.
I think the sign the moon is in and the aspects it makes to your individual charts is more important. I would avoid a void of course moon and the waning cycle. I chose to get married on a new moon in Taurus this year, so far so good.