The US gets most of these movies late because in the US, there's holidays at the start of May and November, Marvel's two main release dates. In most other countries those holidays are a week earlier. So to maximize box office numbers they release them first in those other countries, and a week later in the US.
They've been doing this since Iron Man 2, the first movie that was released in the US late.
It's not a coincidence that all MCU movies that weren't released in the US late since then, are all of those released in July (or on August 1st).
So you can expect the US to get most MCU movies late.
SM:H and AM&TW and should be the exceptions, because they'll be released in July as well.
They've been doing this since Iron Man 2, the first movie that was released in the US late.
It's not a coincidence that all MCU movies that weren't released in the US late since then, are all of those released in July (or on August 1st).
So you can expect the US to get most MCU movies late.
SM:H and AM&TW and should be the exceptions, because they'll be released in July as well.