Hi all. I saw that British Airways Holidays is offering a promotion for double tier points for travel before September 30 2023. If I fly business round trip from DC to Athens, it looks like I could get BA silver in one trip. But I know not to book with shonky third party travel agents. Since this is through BA, can I assume they are trustworthy and will be there for me with IROPs or rebooking canceled flights? Many thanks.