I had submitted this claim before , so I am 100% sure about the terms of BRG.
I submitted one last week. However, they deliberatly delayed reviewing it six days later after the competitor's lodging fare expired.
Then the team told me I am not eligible to get the best rate as ” the lower rate quoted on the competing website provided could not be found“.
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Advide: if you find a better rate ,book it right away and keep receipt as proof then make a claim with Wyndham.