I also tested the link on Internet Explorer and it opened the link without warning. That much alone is worth the switch to Firefox which is an easy download AND it comes with spell checker that works on all places you type, including LCT :app:
🚢 Cruise with your favorite Keene Luxury Travel Staff Member! 💰 5% KLT Reward plus Shipboard Credit available (amount varies per voyage)! 💲 Offering Enhanced KLT Rewards on voyages hosted by Ngaire & Clay!