My late DH and I had a similar problem after we retired.
He was happy to potter about and wanted me around, whereas I became very involved in politics and other voluntary organisations. I had worked for my DH for years and the children were now off my hands, so I wanted to live my life.
The upshot was that we nearly separated over this but decided to see a couples counsellor. After a few sessions opening up to each other, we decided that we spend one day a week doing what he wanted. He also paid for me to accompany him on one occasion travelling to countries he always wanted to visit.
What I suggest here is that you communicate your wishes and find a compromise that works for both of you. You should be able to travel if you want and if your partner isn't willing to join you, than that's her choice. I suppose you could offer to pay for her, if she wants to join you.
Many relationships come under strain, or break up, after retirement because it highlights frissons in the relationship. Couples look ahead and ask themselves if they want to spend the next 30 years or so together!
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