I can't think of anything you'd want to take her on that you'd have to take her out of the sling for. Some we did with dd in sling were haunted mansion and pirates of the carribean. Sometimes on the ones that have the bar that comes down on your lap you have to take her out or move her to your hip.
When my girls were little that was the only way to travel with them. I dont recall anything that you would have to take her out for either. Anything that would require her to be taken out she would be too small to be on in the first place. Have a great trip.