Not sure how old your infant is, but if you don't have a baby carrier, get one now! My top tip for travel survival with an infant is to wear them, and skip the stroller most of the time! But get a good carrier -- NOT a crotch-dangler like a baby björn, but rather an Ergo or similar soft-structured carrier (or a wrap, or a sling if the baby is still quite tiny). This was my saving grace on a variety of trips, and helped as my daughter would nap on my back in a carrier. Anywhere.

And I'd agree with the suggestions to plan for the unexpected, and that babies take a while to adjust on timing, so you/your spouse won't be on a normal sleep schedule!