It’s a good idea to have some cash on hand when going on a tour, as some places may not accept credit cards or other forms of electronic payment. Additionally, you may want to have some cash for tipping tour guides, buying souvenirs or snacks, or other incidental expenses. The amount of cash you should bring will depend on the type and duration of the tour, as well as the destinations and activities involved. It’s a good idea to research the places you’ll be visiting and estimate the costs of any purchases or services you may need. However, it’s also important to keep your cash secure while on tour, so consider carrying only what you need for the day and leaving the rest in a safe place, such as a hotel safe or a secure wallet.