The weekend ended up being great, we got to do most of the stuff I had planned for my sister and I think she really enjoyed the trip. They showed us their area of NYC, and we all got along really well. We didn't get to do everything b/c of the change of plans and b/c we stayed in a different area than where he is located, but that was fine overall.
Hotel price was never the main issue - but I was able to find a suitable one for us. My sister is sick and disabled so I can't just take her to any cheap hotel place, it needs to not only be handicap accessible but handicap friendly in terms of the room and bathroom, some places are too small and while they meet the bare minimum, it's just not comfortable. Obviously the location needs to be perfect as well.
His girlfriend was really nice. She was throwing me shade at first, but I think she quickly realized there was no feelings between us at all. He just knows how to help with my sister from us being together before. We all had dinner together and went out after (me and my sis explored NYC together, then met up later with them in the evening). I didn't mention the email to him and she did apologize for the things she said in it. I also apologized for even excepting the offer - I think she understood that there was no ill will meant on my part.
I wasn't able to get all the money back for some things we couldn't do, like the bike riding b/c we had already arranged for the bike (it's a special type) to be delivered at his house in the morning but it was too late to get it changed to our hotel, plus it was too late to plan a new route that centered around our new location.
Overall the trip was a success.
In regards to MY fiancee, he knows me and so he doesn't have a problem with it. He has an ex that is a friend and I have NO problem with it either, we trust each other to the fullest. It's not like I was going to stay at my exe's house and his gf wasn't going to be there. And my sister.
Also to clear something else up, I didn't plan this trip with the intentions of seeing my ex, I planned this trip b/c it was something my sister always wanted to do.
I'm simply surprised by alot of the negativity I received on this board. People calling me names, talking about my finances, etc etc; to me, THAT'S immature. It seems some people took it WAAAY to personal
In any event, the trip is over and done with, everything worked out, and I do appreciate the advice from those of you ladies who were constructive and helpful.