Am I a bad wife for that?!

Kayla • Recently married, 2 beautiful girls and 1 on the way!
So me and the hubby and kids were suppose to be going on vacation with my MIL, but we just got a call that a cheaper, nicer place is up and were getting it next if we want.... We only have so much money saved up and I think the apartment is best because it is a nicer part of town, cheaper, bigger! Just a smarter choice to me!! But my husband is so mad because he wants to go on vacation instead and he won't even talk to me now!! Idk what to do! We are barley getting by in the place we are in now! And my MIL wants us to go too so that was no help! What should I do?!?!