Many growth stocks have been picking up steam in recent weeks after the Federal Reserve cut rates by 50 basis points in September. The hope and expectation is that more rate cuts could be coming in the months ahead.

This can be positive news for growth investors. Not only can it be more affordable to raise cash, but debt-heavy businesses may have the opportunity to refinance their debt at lower rates, bringing down their interest costs in the process.

One stock that's been benefiting from a more favorable outlook with respect to interest rates is Carnival Corporation (NYSE: CCL). The cruise ship operator's stock has risen more than 50% in just the past six months, but there's plenty of reason to remain bullish on this travel stock for the long haul.

Demand for cruises has been strong this year, and Carnival has posted record numbers. But despite these positive developments, the stock has struggled at times to generate bullishness from investors. While the company's shares have been up big in recent months, they were trading at more than $50 before the pandemic; it's nowhere near those levels today.

The big reason investors appear to be hesitant is Carnival's debt load. In the company's most recent quarter, which ended Aug. 31, its long-term debt and the current portion of its long-term debt (which is due within the next 12 months) came in at a combined $28.9 billion. An easy way to demonstrate the high level of debt the company is carrying is through its debt-to-equity ratio. While Carnival has been improving on the ratio, it remains well above what the stock has averaged over the past decade.

As interest rates come down, investors may be less concerned with Carnival's debt load, especially since it has been improving. Plus, if the company can refinance debt and bring down its interest expenses, that can help improve its bottom line, which can help Carnival more aggressively reduce its debt.

Over the nine-month period ended Aug. 31, Carnival's net income topped $1.6 billion, which is a massive improvement from the $26 million loss it posted during the same period last year.

Another potentially positive consequence of lower interest rates? As expenses start to come down for consumers, cruises could become more affordable. But it's not as if Carnival needs help with revenue growth -- advanced bookings for 2025 are higher than what they were for 2024, and that's even with prices increasing. It also noted a strong start to 2026.