Can I take a booster seat for the rental car at the destination?

You can take the booster seat on board, as longs as it meets the permitted size of your cabin bag (55 x 35 x 25 cm) requirements, and it has side brackets in order to fix the seatbelt. The booster seat counts as one cabin bag. you can add a cabin bag to your booking for a fee. You can do this during your booking or in My Transavia.

You can take a car seat without brackets in your cabin bag, although you cannot use it on board.