They could be 10 million years advanced but they would still be bound by huge distances for drones and transporting a bag of bones at distances & speed
Put simply if Aliens 1000 light years away from us want to visit it will take them that long to get to us at light speed so goodbye to all their relatives.
It's more complex than that with Time Dilation etc but Angilion will be along to tell us exactly how long it would take Aliens a 1000 light years away to get here and then get back home.
I would suggest that any civilisation travelling the galaxy or beyond won't be using conventional engines to propel matter in a way that we understand as the energy requirements are infinite moving at c, they'll use some other form exotic travel to bend space or alter how matter interacts with space, there's plenty of theoretical explanations