Visas
Citizens of most Western countries — including the US, UK, EU member states, Australia, and Canada — can get a visa on arrival at Queen Alia International Airport and most land borders. The fee is 40 Jordanian Dinars (roughly $56 USD). Single entry, valid for 30 days, extendable.
The important exception: the King Hussein Bridge (Allenby Bridge) crossing from Israel does not issue visas on arrival. You must arrange a visa in advance before using this crossing.
The Jordan Pass is worth considering if you plan to visit Petra. It waives the visa fee for stays of three or more nights and includes free entry to Petra, Jerash, and over 40 other sites. If you are visiting Petra anyway, it usually saves money.
eVisa applications are available through Jordan's official portal, typically processed in 3-5 business days.
Money
The currency is the Jordanian Dinar (JD or JOD). It is divided into 1,000 fils and pegged to the US dollar at roughly 0.71 JD to the dollar — making Jordan more expensive than most of its neighbors. Budget around JD 25-40 per day for hostel, food, and local transport; more once you factor in entrance fees, which are significant (Petra alone costs JD 50 for a two-day pass, though the Jordan Pass covers this).
ATMs are plentiful in Amman and major tourist towns. Cards are accepted at hotels and larger restaurants. In smaller towns and at markets, cash is expected.
Language
Arabic is the official language. English is widely spoken in Amman, tourist areas, and among younger Jordanians. Outside cities and tourist sites, expect less English and more reliance on gesture and goodwill — both of which work.
Safety
Jordan is one of the safer countries in the Middle East for travelers. Petty crime is low by international standards, and foreigners are generally treated with hospitality rather than hostility. The main concern is what is happening in neighboring countries — check current travel advisories before you go, as the regional situation can shift.
Women traveling alone will attract attention and occasional unwanted approaches in cities, but Jordan is generally manageable. Dress modestly outside beach resorts.
Health
No specific vaccinations are required, though standard travel vaccinations (hepatitis A, typhoid) are sensible. Tap water is technically potable in Amman but most visitors drink bottled water. The Dead Sea sun is harsher than it feels — use strong sunscreen and limit your exposure.