A Scarlet Macaw typically lives 50–70+ years. Most of what determines whether it gets there is routine care rather than anything dramatic.
Keep the records
Booster schedules run from the original dates, and a new vet asks for the history first.
The annual check
Once a year for an adult bird, and book it before the hot months rather than during them.
Find an avian vet before you need one
Many small-animal clinics do not treat birds at all. Establish who does, in your city, in the first fortnight.
Air and environment
Fumes from non-stick cookware, incense, aerosols and smoke are genuinely dangerous to birds.
Low-shedding, and what it costs
The Scarlet Macaw sheds little. That is why the coat needs more work rather than less: hair that does not fall out mats against the skin instead, so clipping becomes a scheduled expense.
Planning for about 60 years
A Scarlet Macaw is with you for about 60 years. Budget and routine both need to survive that, including the last quarter of it when a tiny bird needs more veterinary attention than it did young.
Balancing intelligent against loud
Breeds described as both intelligent and loud need the two managed together rather than separately. With a tiny bird that usually means a predictable routine first and training second - the routine is what makes the training stick.