Absolutely! Here are some travel tips when visiting the cities Rzeszów, Lublin, and Warsaw in Poland:

Best Time to Visit:
The optimal time to visit Poland is either between May and June or September and October when the weather is pleasant.

Route and Accessibility:
Major airlines operate frequent flights to Warsaw, and from there, you can conveniently reach Lublin and Rzeszów by train, bus, or domestic flights.

Altitude and Acclimatization:
These cities are at low altitudes, so there are generally no problems encountered with acclimatization.

Accommodation and Booking:
There are plentiful options for accommodation in all three cities that cater to different budget ranges. Booking in advance during major holidays and the summer season is recommended.

Clothing and Essentials:
During Spring and Autumn, pack classic wardrobe pieces that are versatile and can be layered if necessary. During the winter it gets very cold, so pack warm clothing. Always bring comfortable walking shoes for sightseeing.

Health and Safety:
Poland is a safe country, but it’s always advisable to take standard precautions to protect your valuables. Having travel insurance and carrying a basic first aid kit is also recommended.

Local Etiquette and Respect:
Polish people are generally conservative and respectful. When visiting churches, modest dress is required (i.e., women should cover their heads, and both men and women should cover their knees and shoulders).

Enjoy your journey and don’t miss out on visiting historical places, particularly in Warsaw and Lublin. And try local Polish cuisine, you won't be disappointed!