I just love Plaza La Fiesta! It's a trip back in time to what souvenir shopping in Cancun was in…read morethe 1990's. This place is HUGE and has literally everything. If you are thirsty, they have bottled water. They have tequila samplings, though not all the time. I was there when they had a sampling with a scorpion in the bottle (ummm ... no). They have some small snacks near the cash register.
The place has TONS of Corona beer clothing and souvenirs. They probably have a few hundred different Cancun t-shirts. They have caps. They have Sombreros for $17! They have beach covers. They have dresses to include white cotton "confirmation" ones.
They have lots of ceramics and hot sauce bundles and vanilla in various sizes. They have souvenir magnets. Pretty much if you can imagine it as a souvenir, they have it. And, prices are much more reasonable than at other shops. Who has $10 t-shirts at La Isla? They do!
Additionally, they have 2 benches in front of the store with 2 figurines that are good photo spots!