fltcpt

I saw a post that enterprise/alamo downtown seattle rental car return, they have a shuttle to pier 66, but that was quite a few years back, and I am looking to get to the farther away Pier 91. Anybody has any recent experience dropping of rental car then get to Pier 91? Is there shuttle? or do people opt for uber/lyft? Please share your recent experience. (note I was going to call alamo, but I can't seem to find their local number).

I am sorry I am a bit confused. For US citizens, it looks like a visa is required to travel to Mexico, but there're exceptions, e.g. like travel by sea and stay at port for less than 72 hours. I assume that exempts cruise ship passengers on ships that call Mexican ports. However, there seems to be something called FMM, which is supposed to be a tourist permit, which I cannot tell whether that is a separate requirement on top of a tourist visa. I am sure a lot of US citizens have been to Mexico via cruise ships lately (... uh... even with covid?) Can anybody tell me if US citizens need anything at all to visit Mexican ports (for the day) on ships departing from and going back to the US?