I went on one that was mixed. It was supposed to be a frum group, but there were people on it who weren’t shomer Shabbos. There was a minyan every day, 3 times a day. In fact, one of the guys in my group who wasn’t shomer Shabbos actually asked to borrow tefillin one day to try them on! That alone made the entire trip worthwhile.
There was always kosher food, only with hechsherim the OU approves of.
Yes, they are Zionists, and yes, they have a Zionist agenda. I think that’s great. All Jews should appreciate the great gift Hashem has given us.
My brother went on an all boys trip. They are available, just look for them.
Overall, I had an amazing time on the trip, and would highly recommend it to others.