I’d recommend an RX100 too, gets taken places because it actually fits in a pocket, later models have a flippy screen, the flash articulates so can be bounced.
I’ve got a full frame SLR too, but when I take that on holiday it starts to take control of the whole holiday. A decent pocketable camera is a good compromise for holiday IMHO. Bigger stuff is for when you want to fiddle around with manual controls for creative shots and stuff.
If you’re going big lens, unless it’s a bright day, you’re going to need a tripod.
With todays ISOs tripod is only required for night landscape photography or multi exposure shots. No problem walking around with an old non VR/IS 80-400 F2.8 taking shots hand held even as the daylight fades.