I say go for it!!! Just plan ahead like you've done this time for all the possible "what ifs" and enjoy yourself. Personally, I'm a big fan of the wheelchair assistance in today's airports. It removes a lot of the stress from traveling for those of us who are "of a certain age" whether you have mobility issues or not. And the cool part is your whole party gets some of check-in perks right along with you. I aways chat with the person helping and give them a good tip, so I feel good about it as well.