I have heard 6 weeks, but to be safe I'd make sure I didn't request or put too much on my plate that way you can get it done without interruptions. Let me tell you, they do happen! My last toy arrived the day after we were hit by tornadoes all day & we didn't have power & no way to write the review for a week! I hated it because I had to wait & I like to get it done quickly. But I like to wait until I've used the toy enough to give an accurate review. I find that I learn much more about a toy after several uses. I really don't think you can give a fully accurate review with only one use. I like to add how the batteries hold up and all so I like to know the toy well first.