Agreed, you're going to be hormonally all over the place, and both of you emotionally all over the place because an abortion is a pretty big thing to go through. But then, having a baby is also a big step, and if you've both made the decision that it's not feasible right now, then you really ought to be supporting each other.
Talk things through in person, and keep on talking. If you both love each other, then you need to keep on working at it to keep the relationship going.
You definitely need to make the time for each other, and spend time together before you go away together. That way you can use the holiday as a celebration of the two of you, rather than hanging your hopes on it to fix the relationship. Does this make sense?