I'd say it depends on where you are going, how you are getting there and for how long. Most baby equipment (car seats and strollers) can be checked for free. Most hotels and even a lot of vacation rentals will have portable cribs you can borrow. Some car rentals even offer carseats, although I'd be a little skeptical of their quality.
DD1: June '16 DD2: March ‘19 :::: Married since 2011 :::: USN Wife ::::
Re: Renting baby equipment for travel