We go for3- 6 weeks ( will be doing 4.5 in Greece this May- June ) carry on
Wash undies in sink - bring a small thing of powdered lingerie detergent, in a pinch use hotel shampoo lol
You will wear same 4/5 outfits over and over .( by choice , you’ll see )
Runners . Bring and wear runners - cobble stones paving stones , many stairs .
Bring some comfy sandals ( Clarks , Naots , Taos , etc ) make sure sole isn’t too thin ( as you will feel those stones and your feet will get so dusty in thin soled sandals )
A few sun dresses - simple and cool - or a few tops and two skirts .
One pair of long pants - not jeans - and not because jeans aren’t ok they absolutely are , but they are heavy , hot , take up a lot of room , and are impossible to sink wash .
Windbreaker or light jacket of some sort . Also a lightweight shawl - handy for Italy where you must cover shoulders and knees to enter most churches and the Vatican etc - it’s hot so you can just carry it and whip it out to cover shoulders - I’ve also tied one around waist sarong style to cover knees when needed .
They sell
Shampoo conditioner soap etc in Europe . And you will recognize many brands .
Avoid white for bottom as benches and public transport seats can be dirty or dusty .
Don’t worry about looking like you fit in - you don’t and you won’t ( and I was born in Europe and have stayed with family for months at a time - they can always always tell you’re a tourist )
Do worry about how you behave .
Never forget to greet anyone like the ticket sellers or shop clerks with a polite hello BEFORE you ask for any help or service .
Don’t yak loudly in restaurants and cafes .
Don’t put your phone on the table ( not safe ) .
I always take carry on and I always end up not wearing a few things
Also !
Instead of tacky souvenirs - buy yourself a new top or whatever in Europe , it will give you a nice change of something new to wear , plus be a souvenir you can really enjoy for a few years !