Just for clarification, I didn't state that Day 3 transfer has a higher success rate. Just that if you ONLY have an option for a day three transfer, that AART will not do that transfer.
So, for example, if you only have 1 day 3 embryo and the rest of your eggs have died many clinics will opt to transfer the day 3 embryo in case is also dies before reaching day 5. This is not an option at AART.
The BMI limit at AART was due to the anesthesia recommendations from WHO. I specifically asked about clinical pregnancy being affected by BMI and was told that BMI is not correlated with more or less success of clinical pregnancy. This is supported by latest research (2015 onwards).
There are also many clinics that do not require an HSG for IVF. So if a patient is researching clinics its good to know if there will be a waiting period to get an HSG before beginning treatment.
Also to clarify, my experience with AART has nothing to do with these three points. They're just good points to know about when researching clinics. My experience with AART is in regards to what I feel is a mismanagement of my diagnostic tests and diagnosis in general. However, this was not mentioned as it is specific to my individual medical circumstances.