I thought I was the only one with invoice issues with my TA! I often book HAL and Carnival cruises on the website and then transfer to my TA for either OBC or a reduction in price. The percentage I receive seems to vary based on a number of unknown factors. Recently, I booked a $2200 Carnival cruise and received $200 off the price. Cool. Then I booked a HAL cruise for $2180 and he said he could only give me $150 in OBC. These are both 2025 cruises. Okay, fine. Now I am not complaining about the incentive but I reserved these cruises weeks ago and I have only received one of the invoices, I will have to chase down the other invoice by email, which I am prepared to do. It seems that my TA has his assistant do this work and she does them in batches. So, I wait. What's my point? I guess I have two. The cash back percentage seems to vary and TAs seem in no rush to get invoices out.