We have 2 Chase Disney Reward cards.
Mine has almost double the limit of DH's card, but the balance we have on it is mostly those locked in balance transfers with low APRs so we don't use my card to purchase.
DH's card is paid off, but we are planning to use it for the trip.
I am PETRIFIED that Chase will do something squirrelly to his credit line either just before we leave or in the middle of the trip.

I can not tell you how many posts I have read about Chase slashing credit lines with no warning. We will have to bring another card with us to make sure we don't get caught short if they do something wonky.
I was thinking about trading in my car because Honda has 1.9% APR on new Accords right now, but I am afraid to do ANYTHING that will alter our credit. Chase is sort of holding us "hostage" because we don't trust them not to cut DH's credit line. One we get back they can do whatever, but I want to be able to use that card on vacation!
We want to use that card because 1) it has the lowest purchase APR 2) it earns reward dollars. We will carry a bit of a balance for a couple of months after the trip so it makes sense to use the one with the lowest APR.