How can I, a 30-year-old female, let my siblings, who are 35-year-old female and 28-year-old male, know that I prefer not to travel with them?

My siblings—one sister (35F) and one brother (28M)—have both asked me several times to join them and their partners on vacation, and I'm struggling to find a way to say no. My husband and I share a love for travel; it was one of the things that brought us together, and we've enjoyed many trips and weekend getaways over the years (with the exception of 2020). Our demanding jobs and busy social lives make our travel time truly special, allowing us to reconnect and escape from everything else. I find it hard to want to share that experience with just anyone. This conversation would be simpler if I had no intention of traveling with anyone but my husband, but the truth is we are planning a weekend getaway with friends this fall. While I care about my siblings, I can only tolerate their partners, and my husband feels even more strongly against them. We don’t see each other often, and I have a strong feeling that going on a trip together would turn into a frustrating experience, leaving me resentful for spending time and money on something unenjoyable. So, Reddit, I’m looking for advice—what’s the best way to gently explain to my siblings that my husband and I prefer not to go on vacation with them or their partners?