It is very cool that you finally get to experience a more powerful take off than domestic flights! I hope you also get to experience international take off for 777-300ER too, so you can get to experience the full power of GE-90-115B this time! Tip: If you want powerful take off, international flights isn't the only way to see it. If you take off from hot country, like in UAE or South East Asia country. It will also be powerful because in hot climate, the air is thinner, so the engines has to suck in more air than normal to produce thrust. This is why GE90 of Emirate 777 is also special version.